Base station and program to be executed by computer

Abstract

To provide a base station that provides an installer with reference information that helps an installer when determining the installation location of a base station.SOLUTION: A switch 12 receives, from an installer, a first mode for providing reference information to the installer. When a switch 12 receives the first mode, a wireless unit 14 performs carrier sensing within the wireless communication range of a base station 1, and control means 13 detects a busy time on the basis of the received signal strength acquired by carrier sensing and calculates index α by dividing the detected busy time by the observation time. Depending on the value of index α, the control means 13 displays the sentence "There is no signal available" or "The signal is congested" on display device 15 to provide it to the installer, and provides the voice "There is no signal available" or "The signal is congested" to the installer via an audio device 16 and a speaker 17.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a base station and a program to be executed by a computer. [Background technology]

[0002] Wireless LAN (Local Area Network) base stations are often installed by users who have no knowledge of wireless technology (Non-Patent Document 1). In particular, in ordinary homes, they are installed by consumers who have no knowledge of wireless technology.

[0003] Furthermore, the location of wireless LAN base stations has a significant impact on the achievable communication speeds. [Prior art documents] [Non-patent literature]

[0004] [Non-Patent Document 1] FY2022 Radio Wave User Fee Funding Commission Report, "Acquisition, Storage, and Utilization of Radio Wave Exposure Level Monitoring Data," Figure A, pp. 2-16, March 2023. [Non-patent document 2] https: / / support.google.com / youtube / answer / 3037019 co=GENIE.Platform%3DDesktop&hl=en#zippy=%2C%E3%82%A4%E3%83%B3%E3%82%BF%E3%83%BC%E3%83%8D% E3%83%83%E3%83%88%E3%81%AE%E9%80%9F%E5%BA%A6%E3%82%92%E7%A2%BA%E8%AA%8D%E3%81%99%E3%82%8B [Non-patent document 3] M. Sekiguchi, K. Yano, M. Ariyoshi, and K. Kobayashi, "A method for predicting the achieved QoS of wireless LANs to improve application operation quality in spectrum-sharing environments," IEICE Technical Report, vol. 113, no. 131, SR2013-36, pp. 91-98, July 2013. Summary of the Invention [Problem to be solved by the invention]

[0005] However, because radio waves are invisible, it is difficult for users who have no knowledge of wireless to install wireless LAN base stations in appropriate locations.

[0006] Therefore, according to an embodiment of the present invention, a base station is provided that provides an installer with reference information that assists the installer in determining the installation location of the base station.

[0007] Furthermore, according to the embodiment of the present invention, there is provided a program for causing a computer to provide an installer with reference information that helps the installer when deciding on an installation location for a base station. [Means for solving the problem]

[0008] (Configuration 1) According to an embodiment of the present invention, a target base station has a first wireless communication range, provides an installer with no wireless knowledge with reference information to be used as a reference when determining an installation location for a base station that performs wireless communication, and is a target base station to be installed by the installer, and comprises a receiving means, an acquiring means, and a providing means. The receiving means accepts from the installer a first mode in which reference information is provided to the installer, or a second mode in which reference information is not provided to the installer. The acquiring means acquires the reference information when the receiving means accepts the first mode. The providing means provides the installer with the reference information acquired by the acquiring means in at least one of voice and text when the receiving means accepts the first mode. When the receiving means accepts the second mode, the acquiring means does not acquire the reference information, and the providing means does not provide the reference information to the installer.

[0009] (Configuration 2) In configuration 1, the acquisition means performs carrier sensing within the first wireless communication range and acquires a busy time consisting of the total length of time during which the target base station is subjected to interference from wireless communication that uses the same wireless standard and the same frequency as the target base station but is not the communication target of the target base station, the length of time during which the target base station is subjected to interference from wireless communication using another wireless standard that uses the same frequency as the target base station, and the length of time during which the target base station is subjected to interference due to noise from equipment that uses the same frequency as the target base station. The provision means provides the installer with reference information consisting of "the signal is clear" or "the signal is congested" in at least one of voice and text, depending on the length of the busy time received from the acquisition means.

[0010] (Configuration 3) In configuration 2, when the providing means provides the reference information to the installer by voice, the providing means provides the installer with reference information consisting of "the signal is clear" by voice at a first volume and provides the installer with reference information consisting of "the signal is congested" by voice at a second volume that is louder than the first volume, and when the providing means provides the installer with reference information by text, the providing means provides the installer with reference information consisting of "the signal is clear" by text in a first color and provides the installer with reference information consisting of "the signal is congested" by text in a second color that is different from the first color.

[0011] (Configuration 4) In configuration 1, the acquisition means performs carrier sense within the first wireless communication range and acquires a busy time consisting of the total length of time during which the target base station is subjected to interference from wireless communication that uses the same wireless standard and the same frequency as the target base station but is not the communication target of the target base station, the length of time during which the target base station is subjected to interference from wireless communication using another wireless standard that uses the same frequency as the target base station, and the length of time during which the target base station is subjected to interference due to noise from equipment that uses the same frequency as the target base station. The provision means provides the installer with reference information consisting of one of "the signal is clear," "the signal is congested," and "the signal is very congested" in at least one of voice and text, depending on the length of the busy time received from the acquisition means.

[0012] (Configuration 5) In configuration 4, when the providing means provides the reference information to the installer by voice, the providing means provides the installer with reference information consisting of "the signal is clear" by voice at a first volume, provides the installer with reference information consisting of "the signal is congested" by voice at a second volume that is louder than the first volume, and provides the installer with reference information consisting of "the signal is very congested" by voice at a third volume that is louder than the first and second volumes; and when the providing means provides the installer with reference information by text, the providing means provides the installer with reference information consisting of "the signal is clear" by text in a first color, provides the installer with reference information consisting of "the signal is congested" by text in a second color that is different from the first color, and provides the installer with reference information consisting of "the signal is very congested" by text in a third color that is different from the first and second colors.

[0013] (Configuration 6) In configuration 1, the acquisition means acquires the number of terminal devices that communicate wirelessly with the target base station within the first wireless communication range, and the provision means provides the installer with the number of terminal devices acquired by the acquisition means in at least one of voice and text.

[0014] (Configuration 7) In configuration 6, the acquisition means acquires the number of terminal devices at regular intervals, and the provision means provides the installer with the number of terminal devices at regular intervals by at least one of voice and text.

[0015] (Configuration 8) In configuration 1, the acquisition means acquires the number of terminal devices that communicate wirelessly with the target base station within the first wireless communication range, and acquires the received power from the terminal devices that communicate wirelessly with the target base station, and the providing means provides the installer with the number of terminal devices acquired by the acquisition means by at least one of voice and text, and also provides the installer with the strength of the radio waves by at least one of voice and text depending on the received power acquired by the acquisition means.

[0016] (Configuration 9) In configuration 8, the providing means provides the installer with at least one of "The signal is weak," "The signal is a little weak," and "The signal is strong" in voice and text.

[0017] (Configuration 10) In configuration 9, when the providing means provides the reference information to the installer by voice, the providing means provides the installer with reference information consisting of "The signal is weak" by voice at a first volume, provides the installer with reference information consisting of "The signal is a little weak" by voice at a second volume that is louder than the first volume, and provides the installer with reference information consisting of "The signal is strong" by voice at a third volume that is louder than the second volume; and when the providing means provides the installer with reference information by text, the providing means provides the installer with reference information consisting of "The signal is weak" by text in a first color, provides the installer with reference information consisting of "The signal is a little weak" by text in a second color that is different from the first color, and provides the installer with reference information consisting of "The signal is strong" by text in a third color that is different from the first color and the second color.

[0018] (Configuration 11) In the first configuration, the accepting unit accepts the first mode or the second mode by voice input from the person making the setting.

[0019] (Configuration 12) According to an embodiment of the present invention, there is provided a program for causing a computer to provide reference information to an installer that serves as a reference when determining an installation location of a base station that performs wireless communication, the target base station being a target to be installed by an installer who has no knowledge of wireless communication and that has a first wireless communication range, the program comprising: a first step in which a receiving means receives from an installer a first mode in which reference information is provided to the installer, or a second mode in which reference information is not provided to the installer; a second step in which an acquisition means acquires reference information when the acceptance means accepts the first mode in the first step; a providing means for providing the reference information acquired in the second step to the installer in at least one of voice and text when the accepting means accepts the first mode in the first step; When the receiving means receives the second mode, the obtaining means does not obtain the reference information in the second step; When the accepting means accepts the second mode, the providing means does not provide the reference information to the installer in the third step.

[0020] (Configuration 13) In configuration 12, in the second step, the acquisition means performs carrier sensing in the first wireless communication range, and acquires a busy time consisting of a total time length of a time length during which the target base station is subjected to interference from wireless communication that uses the same wireless standard and the same frequency as the target base station and is not a communication target of the target base station, a time length during which the target base station is subjected to interference from wireless communication that uses the same frequency as the target base station and is of another wireless standard, and a time length during which the target base station is subjected to interference due to noise from a device that uses the same frequency as the target base station; In a third step, the providing means provides the installer with reference information consisting of "Radio waves are free" or "Radio waves are congested" in at least one of voice and text, depending on the length of the busy time received from the acquiring means.

[0021] (Configuration 14) In configuration 13, the providing means When providing reference information to installers via audio, In a third step, reference information consisting of "the signal is clear" is provided to the installer by a voice at a first volume, and reference information consisting of "the signal is congested" is provided to the installer by a voice at a second volume that is louder than the first volume; When providing reference information to installers in writing, In a third step, reference information consisting of "Radio waves are free" is provided to the installer in a sentence in a first color, and reference information consisting of "Radio waves are congested" is provided to the installer in a sentence in a second color different from the first color.

[0022] (Configuration 15) In configuration 12, in the second step, the acquisition means performs carrier sensing in the first wireless communication range, and acquires a busy time consisting of a total time length of a time length during which the target base station is subjected to interference from wireless communication that uses the same wireless standard and the same frequency as the target base station and is not a communication target of the target base station, a time length during which the target base station is subjected to interference from wireless communication that uses the same frequency as the target base station and is of another wireless standard, and a time length during which the target base station is subjected to interference due to noise from a device that uses the same frequency as the target base station; In the third step, the providing means provides the installer with reference information consisting of one of "radio signals are free," "radio signals are congested," and "radio signals are very congested" in at least one of voice and text, depending on the length of the busy time received from the acquiring means.

[0023] (Configuration 16) In configuration 15, the providing means When providing reference information to installers via audio, In a third step, reference information consisting of "the signal is clear" is provided to the installer by a voice at a first volume, reference information consisting of "the signal is congested" is provided to the installer by a voice at a second volume that is louder than the first volume, and reference information consisting of "the signal is very congested" is provided to the installer by a voice at a third volume that is louder than the second volume; When providing reference information to installers in writing, In a third step, reference information consisting of "the signal is free" is provided to the installer in a sentence in a first color, reference information consisting of "the signal is congested" is provided to the installer in a sentence in a second color different from the first color, and reference information consisting of "the signal is very congested" is provided to the installer in a sentence in a third color different from the first color and the second color.

[0024] (Configuration 17) In the second step, the acquiring means acquires the number of terminal devices that communicate wirelessly with the target base station within the first wireless communication range; In the third step, the providing means provides the installer with the number of terminal devices acquired by the acquiring means by at least one of voice and text.

[0025] (Configuration 18) In configuration 17, in the second step, the acquiring means acquires the number of terminal devices at regular time intervals; In the third step, the providing means provides the installer with the number of terminal devices at regular time intervals by at least one of voice and text.

[0026] (Configuration 19) In the configuration 12, in the second step, the acquiring means acquires the number of terminal devices that perform wireless communication with the target base station within the first wireless communication range, and acquires received power from the terminal devices that perform wireless communication with the target base station; The providing means provides the installer with the number of terminal devices acquired by the acquiring means in the third step by at least one of voice and text, and also provides the installer with the strength of the radio waves by at least one of voice and text depending on the reception power acquired by the acquiring means.

[0027] (Configuration 20) In configuration 19, in the third step, the providing means provides the installer with at least one of "The signal is weak," "The signal is slightly weak," and "The signal is strong" in voice and text form.

[0028] (Configuration 21) In configuration 20, the providing means When providing reference information to installers via audio, In a third step, providing reference information consisting of "The signal is weak" to the installer in a voice at a first volume, providing reference information consisting of "The signal is a little weak" to the installer in a voice at a second volume that is louder than the first volume, and providing reference information consisting of "The signal is strong" to the installer in a voice at a third volume that is louder than the second volume; When providing reference information to installers in writing, In a third step, reference information consisting of "The signal is weak" is provided to the installer in a sentence in a first color, reference information consisting of "The signal is a little weak" is provided to the installer in a sentence in a second color different from the first color, and reference information consisting of "The signal is strong" is provided to the installer in a sentence in a third color different from the first color and the second color.

[0029] (Configuration 22) In the twelfth aspect, in the first step, the accepting means accepts the first mode or the second mode by voice input from the person who sets the setting. [Effects of the Invention]

[0030] Installers with no knowledge of wireless technology can easily install base stations. [Brief explanation of the drawings]

[0031] [Figure 1] 1 is a schematic diagram of a communication system according to an embodiment of the present invention. [Figure 2] FIG. 2 is a schematic diagram of a base station 1 shown in FIG. [Figure 3] FIG. 2 is a schematic diagram of the switch 12. [Figure 4] 3 is a flowchart illustrating an operation of the base station 1 shown in FIG. 2 in the first embodiment. [Figure 5] 5 is a flowchart for explaining detailed operations of step S9 shown in FIG. 4. [Figure 6] 5 is a flowchart for explaining the detailed operation of step S11 in FIG. 4. [Figure 7] 5 is a flowchart for explaining the detailed operation of step S12 in FIG. 4. [Figure 8] 5 is another flowchart for explaining the detailed operation of step S9 shown in FIG. 4. [Figure 9] 5 is another flowchart for explaining the detailed operation of step S11 shown in FIG. 4. [Figure 10] 5 is another flowchart for explaining the detailed operation of step S12 shown in FIG. 4. [Figure 11] 10 is a flowchart illustrating an operation of the base station 1 shown in FIG. 2 in the second embodiment. [Figure 12] 10 is a flowchart illustrating an operation of the base station 1 shown in FIG. 2 in the third embodiment. [Figure 13] 13 is a first flowchart illustrating the detailed operation of step S22 in FIG. 12. [Figure 14] 13 is a second flowchart illustrating the detailed operation of step S22 in FIG. [Figure 15] 13 is a flowchart for explaining the detailed operation of step S24 in FIG. 12. [Figure 16] 13 is a flowchart for explaining the detailed operation of step S26 in FIG. 12. [Figure 17] FIG. 10 is a schematic diagram of another switch. [Figure 18] 10 is a flowchart for explaining the operation of the base station 1 when at least one of the first to third embodiments is executed. [Figure 19] FIG. 10 is a schematic diagram of a base station according to a fourth embodiment. [Figure 20] FIG. 20 is a schematic diagram of a display screen of a display device 15A shown in FIG. [Figure 21] 20 is a flowchart for explaining the operation of the base station 1A shown in FIG. 19. DETAILED DESCRIPTION OF THE INVENTION

[0032] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are designated by the same reference numerals and description thereof will not be repeated.

[0033] 1 is a schematic diagram of a communication system according to an embodiment of the present invention. Referring to FIG. 1, a communication system 10 according to the embodiment of the present invention includes base stations 1 and 2 and terminal devices 3-8.

[0034] Base station 1 has a wireless communication range REG1, and base station 2 has a wireless communication range REG2. Part of wireless communication range REG1 overlaps with part of wireless communication range REG2.

[0035] Terminal devices 3 to 5 are located within the wireless communication range REG1 of base station 1. Terminal device 6 is located within the overlapping range of wireless communication ranges REG1 and REG2 of base station 1. Terminal devices 7 and 8 are located within the wireless communication range REG2 of base station 2.

[0036] The base station 1 performs wireless communication with the terminal devices 3 to 5 according to the wireless standard WS1 within the wireless communication range REG1. Therefore, the terminal devices 3 to 5 are terminal devices under the control of the base station 1.

[0037] The base station 2 performs wireless communication with the terminal devices 6 to 8 within the wireless communication range REG2 using the same frequency as the frequency of the wireless standard WS1, according to a wireless standard WS2 different from the wireless standard WS1. Therefore, the terminal devices 6 to 8 are terminal devices under the control of the base station 2. As a result, the terminal devices 6 to 8 are terminal devices not under the control of the base station 1.

[0038] Base station 1 is subject to interference from wireless communications that use the same wireless standard WS1 and the same frequency as base station 1 and are not the target of base station 1's communications, interference from wireless communications using another wireless standard WS2 that uses the same frequency as base station 1 (for example, interference from wireless communications by terminal device 6), and interference due to noise from devices (for example, home appliances) that use the same frequency as base station 1.

[0039] Therefore, using the method described below, base station 1 detects the busy time T_bsy in the wireless communication range REG1 based on "the length of time during which interference is received from wireless communication that uses the same wireless standard WS1 and the same frequency as base station 1 but is not the communication target of base station 1," "the length of time during which interference is received from wireless communication using another wireless standard WS2 that uses the same frequency as base station 1," and "the length of time during which interference is received due to noise from equipment that uses the same frequency as base station 1 (for example, home appliances such as microwave ovens)."

[0040] The base station 1 is a target base station that is to be installed by an installer who has no knowledge of wireless technology. The base station 1 provides the installer with reference information REF_info, which is used as a reference when deciding where to install the base station 1, by a method described later.

[0041] The location where the base station 1 is installed is, for example, the installer's home. When installing the base station 1 at home, an installer who has no knowledge of wireless technology does not know where in the home the base station 1 should be installed so that wireless communication can be performed.

[0042] Therefore, in the embodiment of the present invention, a base station 1 that provides reference information REF_info to an installer when the installer installs the base station 1 at his / her home will be described.

[0043] The location where the base station 1 is installed is not limited to the installer's home, but may be any location where a person without knowledge of wireless technology can install a base station.

[0044] Fig. 2 is a schematic diagram of the base station 1 shown in Fig. 1. Referring to Fig. 2, the base station 1 includes an antenna 11, a switch 12, a control means 13, a wireless unit 14, a display device 15, an audio device 16, and a speaker 17.

[0045] The switch 12 has a structure that allows it to be switched between “ON” and “OFF”, and is installed on the surface of the base station 1.

[0046] Fig. 3 is a schematic diagram of the switch 12. Referring to Fig. 3, the switch 12 has "ON1", "ON2", "ON3", and "OFF".

[0047] "ON1" is pressed when the installer wishes the reference information REF_info to be provided both in text and audio. "ON2" is pressed when the installer wishes the reference information REF_info to be provided in text only. "ON3" is pressed when the installer wishes the reference information REF_info to be provided in audio only. "OFF" is pressed when the installer does not wish the reference information REF_info to be provided.

[0048] When the installer desires the reference information REF_info, he presses one of "ON1", "ON2" and "ON3" of the switch 12, and when the installer does not desire the reference information REF_info, he presses "OFF" of the switch 12.

[0049] When the installer presses any of "ON1", "ON2" and "ON3" on switch 12, switch 12 accepts a first mode in which reference information REF_info is provided to the installer, and when the installer presses "OFF" on switch 12, switch 12 accepts a second mode in which reference information REF_info is not provided to the installer.

[0050] When "ON1" is pressed, the switch 12 outputs to the control means 13 a signal S_RQE_1 indicating that the installer wishes to receive reference information REF_info in text and voice.

[0051] Furthermore, when "ON2" is pressed, the switch 12 outputs to the control means 13 a signal S_RQE_2 indicating that the installer wishes to provide reference information REF_info in text form only.

[0052] Furthermore, when "ON3" is pressed, the switch 12 outputs to the control means 13 a signal S_RQE_3 indicating that the installer wishes to receive reference information REF_info by voice only.

[0053] On the other hand, when "OFF" is pressed, the switch 12 outputs to the control means 13 a signal S_RQE_no indicating that the installer does not wish to provide the reference information REF_info.

[0054] In the base station 1, the display device 15 is, for example, a liquid crystal device.

[0055] 2 is a base station in the following embodiments 1 to 3. Therefore, the control means 13, wireless unit 14, display device 15, audio device 16, and speaker 17 of the base station 1 will be described in the following embodiments 1 to 3.

[0056] [Embodiment 1] The control means 13 has a built-in timer. The control means 13 also has a correspondence table TBL1 shown in Table 1 built-in in advance.

[0057] [Table 1]

[0058] Table 1 is configured by associating α=[busy time T_bsy / observation time T_osv], reference information REF_info, text color, and voice volume with each other.

[0059] The index α is the division result [busy time T_bsy / observation time T_osv] obtained by dividing the busy time T_bsy by the observation time T_osv.

[0060] In a wireless LAN, busy times are caused by interference from wireless communications that use the same wireless standard WS1 and the same frequency as base station 1 but are not the target of base station 1's communications, interference from wireless communications using another wireless standard WS2 that uses the same frequency as base station 1, and interference due to noise from devices that use the same frequency as base station 1.

[0061] Therefore, in an embodiment of the present invention, the busy time T_bsy consists of the sum of a time length T_bsy_1 during which interference occurs from wireless communication that uses the same wireless standard WS1 and the same frequency as base station 1 but is not the communication target of base station 1, a time length T_bsy_2 during which interference occurs from wireless communication using another wireless standard WS2 that uses the same frequency as base station 1, and a time length T_bsy_3 during which interference occurs due to noise from equipment that uses the same frequency as base station 1.

[0062] The observation time T_osv is the length of time during which wireless communication within the wireless communication range REG1 is observed.

[0063] In wireless LANs, there are three ways to determine busy times:

[0064] (A) If the signal received during carrier sensing uses the same wireless standard and frequency as base station 1, and the received signal strength RSSI of a wireless communication that is not the target of communication for base station 1 is greater than or equal to a threshold value RSSI_th_1 (e.g., -82 dBm), it is determined to be busy.

[0065] (B) If the received signal strength RSSI of a wireless communication signal received during carrier sensing according to another wireless standard WS2 that uses the same frequency as base station 1 is equal to or greater than a threshold value RSSI_th_2 (for example, -62 dBm), it is determined to be busy.

[0066] (c) When the signal received during carrier sensing is subject to interference due to noise from equipment using the same frequency as base station 1, if the received signal strength RSSI is equal to or greater than a threshold value RSSI_th_2 (for example, -62 dBm), the base station is determined to be busy.

[0067] Note that "-82 dBm" and "-62 dBm" are just examples, and therefore values ​​other than "-82 dBm" and "-62 dBm" may be used as the thresholds RSSI_th (=thresholds RSSI_th_1, RSSI_th_2).

[0068] Non-Patent Document 2 describes the relationship between the resolution of YouTube (registered trademark) videos and the recommended speed required for video playback. Non-Patent Document 2 also describes "5Mbps" as the recommended sustained speed when the video resolution is "HD 1080p."

[0069] The resolution of a typical smartphone is equivalent to "HD 1080p." When one person watches full high definition (HD), the wireless resource utilization rate in the time domain is 5Mbps / [54Mbps × 0.7] = 0.1323 ≒ 0.13.

[0070] Here, "0.7" is based on the fact that when the transmission rate is 54 Mbps in the IEEE802.11a standard, the upper limit of the wireless resource utilization rate in the time direction is approximately 70% (=0.7) (Non-Patent Document 3).

[0071] When three family members each watch a video, the wireless resource utilization rate in the time direction is approximately 0.4 (=0.13×3=0.39≒0.4).

[0072] Therefore, when the wireless resource utilization rate is "greater than or equal to 0 and less than 0.4", it is appropriate to set "the signal is free" as the reference information REF_info, and when the wireless resource utilization rate is "0.4 or greater", it is appropriate to set "the signal is congested" as the reference information REF_info.

[0073] Therefore, in the correspondence table TBL1, when "0≦α<0.4", "the signal is clear" is set as the reference information REF_info, and when "0.4≦α", "the signal is congested" is set as the reference information REF_info.

[0074] In correspondence table TBL1, when index α is 0≦α<0.4, reference information REF_info consists of "the signal is clear", the color of the text when reference information REF_info is provided in text consists of "first color", and the volume of the audio when reference information REF_info is provided in audio consists of "first volume".

[0075] Furthermore, when the index α is 0.4≦α, the reference information REF_info consists of "The signal is congested", the color of the text when the reference information REF_info is provided in text is a "second color" different from the first color, and the volume of the audio when the reference information REF_info is provided is a "second volume" that is louder than the first volume.

[0076] When the control means 13 receives any one of the signals S_RQE_1 to S_RQE_3 from the switch 12, it refers to the timer and controls the wireless unit 14 to perform carrier sensing for an observation time T_osv (e.g., 5 seconds) at regular intervals (e.g., 10 seconds).

[0077] The control means 13 receives from the wireless unit 14 the received signal S_rev when the wireless unit 14 performs carrier sensing and the received signal strength RSSI of the received signal S_rev.

[0078] Then, the control means 13 detects the length of time during which the received signal strength RSSI is equal to or greater than the threshold RSSI_th as the busy time T_bsy.

[0079] The threshold value RSSI_th is, for example, "-82 dBm" when the signal S_rev is signal S_rev_1, which uses the same wireless standard and frequency as base station 1 and is subjected to interference from wireless communication that is not the target of base station 1's communication; and is, for example, "-62 dBm" when the signal S_rev is signal S_rev_2, which is subjected to interference from wireless communication using a different wireless standard that uses the same frequency as base station 1, or when the signal S_rev is signal S_rev_3, which is subjected to interference due to noise from equipment that uses the same frequency as base station 1.

[0080] The threshold value RSSI_th is made up of a threshold value RSSI_th_1 and a threshold value RSSI_th_2.

[0081] The control means 13 holds in advance "-82 dBm" as the threshold value RSSI_th_1 and "-62 dBm" as the threshold value RSSI_th_2.

[0082] Therefore, when the control means 13 receives the received signal S_rev and the received signal strength RSSI from the wireless unit 14, it determines whether the received signal S_rev is a signal that uses the same wireless standard and frequency as the base station 1 but is interfered with by a wireless communication that is not the target of communication for the base station 1, a signal that is interfered with by a wireless communication using a different wireless standard that uses the same frequency as the base station 1, or a signal that is interfered with by noise from a device that uses the same frequency as the base station 1.

[0083] Specifically, if the base station 1 demodulates the received signal S_rev and finds that the sender is a wireless device other than the communication target of the base station 1, the base station 1 determines that the received signal S_rev is interference from a wireless communication that uses the same wireless standard and the same frequency as the base station 1 and is not the communication target of the base station 1. Furthermore, if the base station 1 is unable to demodulate the received signal S_rev and a fixed signal waveform is added to the beginning, the base station 1 determines that the received signal S_rev is interference from a wireless communication of a different wireless standard that uses the same frequency as the base station 1. In all other cases, the base station 1 determines that the received signal S_rev is interference due to noise from a device that uses the same frequency as the base station 1.

[0084] When the control means 13 determines that the received signal S_rev is "a signal that has been interfered with by wireless communication that uses the same wireless standard and the same frequency as base station 1 but is not the target of communication with base station 1," it detects the length of time that the received signal strength RSSI is "-82 dBm" or greater as busy time T_bsy_1; when the control means 13 determines that the received signal S_rev is "a signal that has been interfered with by wireless communication using a different wireless standard that uses the same frequency as base station 1," it detects the length of time that the received signal strength RSSI is "-62 dBm" or greater as busy time T_bsy_2; and when the control means 13 determines that the received signal S_rev is "a signal that has been interfered with by noise from equipment that uses the same frequency as base station 1," it detects the length of time that the received signal strength RSSI is "-62 dBm" or greater as busy time T_bsy_3.

[0085] Then, the control means 13 calculates the total of the busy time T_bsy_1, the busy time T_bsy_2 and the busy time T_bsy_3 as the busy time T_bsy.

[0086] The busy time T_bsy_1 does not include the time during which the base station 1 is performing wireless communication with the terminal devices 3 to 5 within its own wireless communication range REG1. Therefore, the busy time T_bsy_1 is, for example, the length of time during which the base station 1 is subjected to interference due to wireless communication between the base station 2 and the terminal device 6 that is present within the wireless communication range REG1 and performs wireless communication with the base station 2, among the terminal devices 6 to 8 that perform wireless communication with the base station 2 other than the base station 1.

[0087] When the control means 13 detects the busy time T_bsy (=T_bsy_1+T_bsy_2+T_bsy_3), it divides the busy time T_bsy by the observation time T_osv (for example, 10 seconds) to calculate the index α (=busy time T_bsy / observation time T_osv).

[0088] Then, the control means 13 receives the signal S_RQE_1 from the switch 12, and when the index α satisfies 0≦α<0.4, refers to the correspondence table TBL1 and detects "the signal is clear" as the reference information REF_info, detects "first color" as the color of the text, and detects "first volume" as the volume of the voice.

[0089] In response, the control means 13 outputs the reference information REF_info="There is free radio signal" and the text color="first color" to the display device 15, and controls the display device 15 to display the text "There is free radio signal" in the "first color".

[0090] In addition, the control means 13 outputs reference information REF_info="There is free radio signal" and voice volume="first volume" to the voice device 16, and controls the voice device 16 to emit the voice "There is free radio signal" from the speaker 17 at the first volume.

[0091] On the other hand, the control means 13 receives the signal S_RQE_1 from the switch 12, and when the index α satisfies 0.4≦α, refers to the correspondence table 1 and detects "The signal is congested" as the reference information REF_info, detects "the second color" as the color of the text, and detects "the second volume" as the volume of the voice.

[0092] In response, the control means 13 outputs the reference information REF_info="Radio signals are congested" and the text color="second color" to the display device 15, and controls the display device 15 to display the text "Radio signals are congested" in the "second color" which is different from the first color.

[0093] In addition, the control means 13 outputs reference information REF_info="The radio waves are congested" and voice volume="second volume" to the voice device 16, and controls the voice device 16 to emit the voice "The radio waves are congested" from the speaker 17 at the "second volume" which is louder than the first volume.

[0094] The control means 13 receives the signal S_RQE_2 from the switch 12, and when the index α satisfies 0≦α<0.4, refers to the correspondence table TBL1, detects "the signal is clear" as the reference information REF_info, and detects "the first color" as the color of the text.

[0095] Then, the control means 13 outputs the reference information REF_info="There is free radio wave reception" and the text color="first color" to the display device 15, and controls the display device 15 to display the text "There is free radio wave reception" in the "first color".

[0096] In addition, the control means 13 receives the signal S_RQE_2 from the switch 12, and when the index α satisfies 0.4≦α, it refers to the correspondence table 1, detects "The signal is congested" as the reference information REF_info, and detects a "second color" different from the first color as the color of the text.

[0097] Then, the control means 13 outputs the reference information REF_info="Radio signals are congested" and the text color="second color" to the display device 15, and controls the display device 15 to display the text "Radio signals are congested" in the "second color" different from the first color.

[0098] The control means 13 receives the signal S_RQE_3 from the switch 12, and when the index α satisfies 0≦α<0.4, refers to the correspondence table TBL1, detects "the signal is clear" as the reference information REF_info, and detects "first volume" as the voice volume.

[0099] Then, the control means 13 outputs the reference information REF_info="There is free radio signal" and the voice volume="first volume" to the voice device 16, and controls the voice device 16 to emit the voice "There is free radio signal" from the speaker 17 at the "first volume".

[0100] In addition, the control means 13 receives the signal S_RQE_3 from the switch 12, and when the index α satisfies 0.4≦α, refers to the correspondence table 1, detects "The signal is congested" as the reference information REF_info, and detects "the second volume" as the voice volume, which is higher than the first volume.

[0101] Then, the control means 13 outputs the reference information REF_info="The radio waves are congested" and the voice volume="second volume" to the voice device 16, and controls the voice device 16 to emit the voice "The radio waves are congested" from the speaker 17 at the "second volume" which is louder than the first volume.

[0102] The wireless unit 14 performs carrier sensing within the wireless communication range REG1 via the antenna 11 in accordance with the control of the control means 13, and receives the received signal strength RSSI. Then, the wireless unit 14 outputs the received signal strength RSSI to the control means 13.

[0103] When the index α satisfies 0≦α<0.4, the display device 15 receives the reference information REF_info="clear signal is available" and the text color="first color" from the control means 13. Then, in accordance with the control from the control means 13, the display device 15 displays the text "clear signal is available" in the "first color."

[0104] Furthermore, when the index α satisfies 0.4≦α, the display device 15 receives reference information REF_info="The signal is congested" and text color="second color" from the control means 13. Then, in accordance with the control from the control means 13, the display device 15 displays the text "The signal is congested" in the "second color" different from the first color.

[0105] When the index α satisfies 0≦α<0.4, the audio device 16 receives reference information REF_info="clear signal is available" and audio volume="first volume" from the control means 13. Then, in accordance with the control from the control means 13, the audio device 16 amplifies the audio "clear signal is available" to the "first volume" and outputs it from the speaker 17.

[0106] Furthermore, when the index α satisfies 0.4≦α, the audio device 16 receives reference information REF_info="The signal is congested" and audio volume="second volume" from the control means 13. Then, in accordance with the control from the control means 13, the audio device 16 amplifies the audio "The signal is congested" to the "second volume" that is higher than the first volume and outputs it from the speaker 17.

[0107] When the speaker 17 receives the voice "Radio wave is free" amplified to the "first volume" from the audio device 16, it converts the voice "Radio wave is free" into air vibration and emits it at the "first volume."

[0108] Furthermore, when the speaker 17 receives the voice "The radio waves are congested" amplified to the "second volume" from the audio device 16, it converts the voice "The radio waves are congested" into air vibrations and emits it at the "second volume" that is louder than the first volume.

[0109] In the first embodiment, the control means 13 may have a correspondence table TBL2 shown in Table 2 built in beforehand instead of the correspondence table TBL1.

[0110] [Table 2]

[0111] Table 2 is a structure in which α=[busy time T_bsy / observation time T_osv], reference information, text color, and voice volume are mutually associated.

[0112] When the index α is 0≦α<0.2, the reference information REF_info consists of "the signal is clear", the color of the text when the reference information REF_info is provided in text consists of "first color", and the volume of the audio when the reference information REF_info is provided in audio consists of "first volume".

[0113] Furthermore, when the index α is 0.2≦α<0.5, the reference information REF_info consists of "The signal is congested", and when the reference information REF_info is provided in text, the color of the text is a "second color" different from the first color, and when the reference information REF_info is provided in audio, the volume of the audio is a "second volume" that is louder than the first volume.

[0114] Furthermore, when the index α is 0.5≦α, the reference information REF_info consists of "The radio signals are very congested", the color of the text when the reference information REF_info is provided in text is a "third color" different from the first color and the second color, and the volume of the audio when the reference information REF_info is provided in audio is a "third volume" that is louder than the second volume.

[0115] When the control means 13 receives any one of the signals S_RQE_1 to S_RQE_3 from the switch 12, it calculates the index α (=busy time T_bsy / observation time T_osv) by the method described above.

[0116] Then, the control means 13 receives the signal S_RQE_1 from the switch 12, and when the index α satisfies 0≦α<0.2, refers to the correspondence table TBL2 and detects "the signal is clear" as the reference information REF_info, detects "first color" as the color of the text, and detects "first volume" as the volume of the voice.

[0117] In response, the control means 13 outputs the reference information REF_info="There is free radio wave reception" and the text color="first color" to the display device 15, and controls the display device 15 to display the text "There is free radio wave reception" in the "first color".

[0118] In addition, the control means 13 outputs reference information REF_info="There is free radio signal" and voice volume="first volume" to the voice device 16, and controls the voice device 16 to emit the voice "There is free radio signal" from the speaker 17 at the "first volume".

[0119] In addition, when the control means 13 receives the signal S_RQE_1 from the switch 12 and the index α satisfies 0.2≦α<0.5, it refers to the correspondence table TBL2 and detects "The signal is congested" as the reference information REF_info, detects "second color" as the color of the text, and detects "second volume" as the volume of the voice.

[0120] Then, the control means 13 outputs the reference information REF_info="Radio signals are congested" and the text color="second color" to the display device 15, and controls the display device 15 to display the text "Radio signals are congested" in the "second color".

[0121] In addition, the control means 13 outputs reference information REF_info="The radio waves are congested" and voice volume="second volume" to the voice device 16, and controls the voice device 16 to emit the voice "The radio waves are congested" from the speaker 17 at the "second volume" which is louder than the first volume.

[0122] Furthermore, when the control means 13 receives the signal S_RQE_1 from the switch 12 and the index α satisfies 0.5≦α, it refers to the correspondence table TBL2 and detects "The radio waves are very congested" as the reference information REF_info, detects a "third color" different from the first color and the second color as the color of the text, and detects a "third volume" that is louder than the second volume as the volume of the voice.

[0123] In response, the control means 13 outputs the reference information REF_info="Radio waves are very congested" and the text color="third color" to the display device 15, and controls the display device 15 to display the text "Radio waves are very congested" in the "third color."

[0124] In addition, the control means 13 outputs reference information REF_info="Radio waves are very congested" and voice volume="third volume" to the audio device 16, and controls the audio device 16 to emit the voice "Radio waves are very congested" from the speaker 17 at the "third volume".

[0125] When the index α satisfies 0≦α<0.2, the display device 15 receives the reference information REF_info="clear signal is available" and the text color="first color" from the control means 13. Then, in accordance with the control from the control means 13, the display device 15 displays the text "clear signal is available" in the "first color."

[0126] Furthermore, when the index α satisfies 0.2≦α<0.5, the display device 15 receives the reference information REF_info="The signal is congested" and the text color="second color" from the control means 13. Then, in accordance with the control from the control means 13, the display device 15 displays the text "The signal is congested" in the "second color" which is different from the first color.

[0127] Furthermore, when the index α satisfies 0.5≦α, the display device 15 receives the reference information REF_info="The signal is very congested" and the text color="third color" from the control means 13. Then, in accordance with the control from the control means 13, the display device 15 displays the text "The signal is very congested" in the "third color" which is different from the first color and the second color.

[0128] When the index α satisfies 0≦α<0.2, the audio device 16 receives reference information REF_info="clear signal is available" and audio volume="first volume" from the control means 13. Then, in accordance with the control from the control means 13, the audio device 16 amplifies the audio "clear signal is available" to the "first volume" and outputs it to the speaker 17.

[0129] Furthermore, when the index α satisfies 0.2≦α<0.5, the audio device 16 receives reference information REF_info="The signal is congested" and audio volume="second volume" from the control means 13. Then, in accordance with the control from the control means 13, the audio device 16 amplifies the audio of "The signal is congested" to the "second volume" that is higher than the first volume and outputs it to the speaker 17.

[0130] Furthermore, when the index α satisfies 0.5≦α, the audio device 16 receives reference information REF_info="The radio waves are very congested" and audio volume="third volume" from the control means 13. Then, in accordance with the control from the control means 13, the audio device 16 amplifies the audio "The radio waves are very congested" to the "third volume" that is higher than the second volume and outputs it to the speaker 17.

[0131] When the index α satisfies 0≦α<0.2, when the speaker 17 receives the voice "There is free radio wave traffic" amplified to the "first volume" from the audio device 16, the speaker 17 converts the voice "There is free radio wave traffic" into air vibrations and emits it at the "first volume."

[0132] Furthermore, when the index α satisfies 0.2≦α<0.5, when the speaker 17 receives the voice "The radio waves are congested" amplified to the "second volume" from the audio device 16, the speaker 17 converts the voice "The radio waves are congested" into air vibrations and emits it at the "second volume" that is louder than the first volume.

[0133] Furthermore, when the index α satisfies 0.5≦α, when the speaker 17 receives the voice "The radio waves are very congested" amplified to the "third volume" from the audio device 16, the speaker 17 converts the voice "The radio waves are very congested" into air vibrations and emits it at the "third volume" that is louder than the second volume.

[0134] FIG. 4 is a flowchart for explaining the operation of base station 1 shown in FIG. 2 in the first embodiment.

[0135] 4, when the operation of the base station 1 is started, the control means 13 of the base station 1 determines whether or not it has received from the switch 12 a signal S_RQE (= any of the signals S_RQE_1 to S_RQE_3) indicating that the installer is requesting the provision of reference information REF_info (step S1). In this case, if the installer presses any of "ON1", "ON2", and "ON3" of the switch 12 of the base station 1, the control means 13 determines that it has received from the switch 12 a signal S_RQE (= any of the signals S_RQE_1 to S_RQE_3), and if the installer presses "OFF" of the switch 12 of the base station 1, the control means 13 determines that it has received from the switch 12 a signal S_RQE_no indicating that the installer does not wish to be provided with the reference information REF_info (i.e., it determines that it has not received from the switch 12 a signal S_RQE (= any of the signals S_RQE_1 to S_RQE_3)).

[0136] When it is determined in step S1 that the signal S_RQE (=any of the signals S_RQE_1 to S_RQE_3) has been received from the switch 12, the control means 13 determines that the first mode is for providing reference information REF_info to the installer (step S2).

[0137] Then, the control means 13 refers to the built-in timer and determines whether it is time to perform carrier sensing (step S3).

[0138] If it is determined in step S3 that it is not time to perform carrier sensing, the base station 1 waits (step S4). After that, the operation of the base station 1 proceeds to step S3, and steps S3 and S4 are repeatedly executed until it is determined in step S3 that it is time to perform carrier sensing.

[0139] Then, in step S3, when it is determined that it is time to perform carrier sense, the control means 13 controls the wireless unit 14 to perform carrier sense at the observation time T_osv.

[0140] In accordance with the control of the control means 13, the wireless unit 14 performs carrier sensing within the wireless communication range REG1 during the observation time T_osv, detects a received signal S_rev_1 when it is interfered with by a wireless communication that uses the same wireless standard and the same frequency as base station 1 and is not the communication target of base station 1, and detects the received signal strength RSSI1 of the received signal S_rev_1, detects a received signal S_rev_2 when it is interfered with by a wireless communication using a different wireless standard that uses the same frequency as base station 1, and detects the received signal strength RSSI2 of the received signal S_rev_2, detects a received signal S_rev_3 when it is interfered with by noise from an equipment that uses the same frequency as base station 1, and detects the received signal strength RSSI3 of the received signal S_rev_3 (step S5), and outputs the detected received signals R_rev_1, R_rev_2, R_rev_3 and the received signal strengths RSSI1, RSSI2, RSSI3 to the control means 13.

[0141] The control means 13 receives the received signals R_rev_1, R_rev_2, R_rev_3 and the received signal strengths RSSI1, RSSI2, RSSI3 from the wireless unit 14. Then, the control means 13 detects as the busy time T_bsy the sum of the time length T_bsy_1 during which the received signal strength RSSI1 is equal to or greater than a threshold RSSI_th_1 (=-82 dBm), the time length T_bsy_2 during which the received signal strength RSSI2 is equal to or greater than a threshold RSSI_th_2 (=-62 dBm), and the time length T_bsy_3 during which the received signal strength RSSI3 is equal to or greater than the threshold RSSI_th_2 (=-62 dBm) (step S6).

[0142] Thereafter, the control means 13 calculates the index α by dividing the busy time T_bsy by the observation time T_osv (step S7).

[0143] Then, the control means 13 determines whether or not to provide the reference information REF_info in both text and audio form (step S8).

[0144] In this case, when the control means 13 receives the signal S_RQE_1 from the switch 12, it determines that the reference information REF_info will be provided in both text and audio, and when it receives the signal S_RQE_2 or the signal S_RQE_3 from the switch 12, it determines that the reference information REF_info will not be provided in both text and audio.

[0145] In step S8, when it is determined that the reference information REF_info is to be provided in both text and audio, the control means 13 and the display device 15 provide the reference information REF_info to the installer in text by changing the color according to the value of the index α, and the control means 13, the audio device 16 and the speaker 17 provide the reference information REF_info in audio by changing the volume according to the value of the index α (step S9).

[0146] On the other hand, when it is determined in step S8 that the reference information REF_info will not be provided in both text and audio, the control means 13 determines whether or not the reference information REF_info will be provided in text (step S10).

[0147] In this case, when the control means 13 receives the signal S_RQE_2 from the switch 12, it determines that the reference information REF_info should be provided in text, and when it receives the signal S_RQE_3 from the switch 12, it determines that the reference information REF_info should not be provided in text.

[0148] When it is determined in step S10 that the reference information REF_info is to be provided in text, the control means 13 and the display device 15 provide the reference information REF_info in text by changing the color according to the value of the index α (step S11).

[0149] On the other hand, when it is determined in step S10 that the reference information REF_info is not to be provided in text, the control means 13, the audio device 16 and the speaker 17 provide the reference information REF_info in audio form by changing the volume according to the value of the index α (step S12).

[0150] On the other hand, when it is determined in step S1 that the signal S_RQE (=any of the signals S_RQE_1 to S_RQE_3) has not been received from the switch 12, the control means 13 determines that the second mode is in which reference information REF_info is not provided to the installer (step S13).

[0151] After any one of steps S9, S11, S12, and S13, the operation of the base station 1 proceeds to step S1, and as long as the base station 1 is operating, the above-described steps S1 to S13 are repeatedly executed.

[0152] In the flowchart shown in FIG. 4, when the installer presses "ON1" of the switch 12, it is determined in step S1 that the signal S_RQE (=signal S_RQE_1) has been received, and steps S2 to S7 are executed in sequence.

[0153] Then, in step S8, it is determined that the reference information REF_info is to be provided in both text and voice, and in step S9, the reference information REF_info is provided to the installer in both text and voice.

[0154] In the flowchart shown in FIG. 4, when the installer presses "ON2" of the switch 12, it is determined in step S1 that the signal S_RQE (=signal S_RQE_2) has been received, and steps S2 to S7 are executed in sequence.

[0155] Then, in step S8, it is determined that the reference information REF_info will not be provided in both text and audio, in step S10, it is determined that the reference information REF_info will be provided in text, and in step S11, the reference information REF_info is provided to the installer in text.

[0156] Furthermore, in the flowchart shown in FIG. 4, when the installer presses "ON3" of the switch 12, it is determined in step S1 that the signal S_RQE (=signal S_RQE_3) has been received, and steps S2 to S7 are executed in sequence.

[0157] Then, in step S8, it is determined that the reference information REF_info will not be provided in both text and audio, in step S10, it is determined that the reference information REF_info will not be provided in text, and in step S12, the reference information REF_info is provided to the installer in audio.

[0158] Therefore, according to the flowchart shown in Figure 4, the reference information REF_info is provided to the installer in the format desired by the installer (="text and audio format", "text format", or "audio format"), and the installer can deploy the base station 1 based on the reference information REF_info.

[0159] Fig. 5 is a flowchart for explaining the detailed operation of step S9 shown in Fig. 4. The flowchart shown in Fig. 5 is a flowchart for explaining the detailed operation of step S9 shown in Fig. 4 in the case where the correspondence table TBL1 is used.

[0160] Referring to FIG. 5, when it is determined in step S8 of FIG. 4 that the reference information REF_info is to be provided in both text and audio, the control means 13 determines whether the index α satisfies 0≦α<0.4 (step S91).

[0161] When it is determined in step S91 that the index α satisfies 0≦α<0.4, the control means 13 detects the reference information REF_info of "the signal is clear" from the correspondence table TBL1 (step S92).

[0162] Then, the control means 13 detects the "first color" from the correspondence table TBL1 (step S93), and detects the "first volume" from the correspondence table TBL1 (step S94).

[0163] Thereafter, the control means 13 outputs the text "There is free radio wave" and "First color" to the display device 15 (step S95).

[0164] Subsequently, the control means 13 outputs the voice "The signal is clear" and the "first volume" to the audio device 16 (step S96).

[0165] The display device 15 receives the text "There is free radio wave reception" and the "first color" from the control means 13. Then, the display device 15 displays the text "There is free radio wave reception" in the "first color" (step S97).

[0166] Furthermore, the audio device 16 receives the voice "There is free radio wave traffic" and the "first volume" from the control means 13. Then, the audio device 16 outputs the voice "There is free radio wave traffic" from the speaker 17 at the "first volume" (step S98).

[0167] On the other hand, when it is determined in step S91 that the index α does not satisfy 0≦α<0.4, the control means 13 detects the reference information REF_info of "Radio signal is congested" from the correspondence table TBL1 (step S99).

[0168] Then, the control means 13 detects the "second color" from the correspondence table TBL1 (step S100), and detects the "second volume" from the correspondence table TBL1 (step S101).

[0169] Thereafter, the control means 13 outputs the message "Radio waves are congested" and "Second color" to the display device 15 (step S102).

[0170] Subsequently, the control means 13 outputs the voice "The signal is congested" and the "second volume" to the audio device 16 (step S103).

[0171] The display device 15 receives the text "The signal is congested" and the "second color" from the control means 13. Then, the display device 15 displays the text "The signal is congested" in the "second color" (step S104).

[0172] Furthermore, the audio device 16 receives the voice "The signal is congested" and the "second volume" from the control means 13. Then, the audio device 16 outputs the voice "The signal is congested" from the speaker 17 at the "second volume" that is louder than the first volume (step S105).

[0173] After step S98 or step S105, the operation of the base station 1 proceeds to step S1 in FIG.

[0174] Fig. 6 is a flowchart for explaining the detailed operation of step S11 in Fig. 4. The flowchart shown in Fig. 6 is the same as the flowchart shown in Fig. 5 except that steps S94, S96, S98, S101, S103, and S105 of the flowchart shown in Fig. 5 have been deleted.

[0175] Referring to FIG. 6, when it is determined in step S10 of FIG. 4 that the reference information REF_info is to be provided in text, the control means 13 executes step S91 described above.

[0176] Then, in step S91, when it is determined that α satisfies 0≦α<0.4, the above-mentioned steps S92, S93, S95, and S97 are sequentially executed in the base station 1. As a result, the display device 15 displays the message "There is free signal" in the "first color" to the installer.

[0177] On the other hand, when it is determined in step S91 that α does not satisfy 0≦α<0.4, the above-mentioned steps S99, S100, S102, and S104 are sequentially executed in the base station 1. As a result, the display device 15 displays the sentence "The signal is congested" in a "second color" different from the first color, and provides the installer with reference information REF_info for "The signal is congested."

[0178] After step S97 or step S104, the operation of the base station 1 proceeds to step S1 in FIG.

[0179] According to the flowchart shown in FIG. 6, when it is determined that α satisfies 0≦α<0.4, the reference information REF_info "the signal is clear" is displayed in text in a first color on the display device 15 and provided to the installer (see steps S92, S93, S95, and S97).

[0180] Furthermore, when it is determined that α does not satisfy 0≦α<0.4, the reference information REF_info "Radio signals are congested" is displayed on the display device 15 in text of a second color different from the first color and provided to the installer (see steps S99, S100, S102, S104).

[0181] Fig. 7 is a flowchart for explaining the detailed operation of step S12 in Fig. 4. The flowchart shown in Fig. 7 is the same as the flowchart shown in Fig. 5 except that steps S93, S95, S97, S100, S102, and S104 are deleted from the flowchart shown in Fig. 5.

[0182] 7, when it is determined in step S10 of FIG. 4 that the reference information REF_info is not to be provided in text form, the control means 13 executes step S91 described above.

[0183] Then, when it is determined in step S91 that α satisfies 0≦α<0.4, the above-described steps S92, S94, S96, and S98 are sequentially executed in the base station 1. As a result, the audio device 16 emits the voice message "There is free signal" from the speaker 17 at the "first volume."

[0184] On the other hand, when it is determined in step S91 that α does not satisfy 0≦α<0.4, the above-described steps S99, S101, S103, and S105 are sequentially executed in the base station 1. As a result, the audio device 16 issues a voice message saying "The signal is congested" from the speaker 17 at a "second volume" that is higher than the first volume.

[0185] After step S98 or step S105, the operation of the base station 1 proceeds to step S1 in FIG.

[0186] According to the flowchart shown in FIG. 7, when it is determined that α satisfies 0≦α<0.4, reference information REF_info "the signal is clear" is provided to the installer by the audio device 16 and the speaker 17 in a voice at a first volume (see steps S92, S94, S96, and S98).

[0187] Furthermore, when it is determined that α does not satisfy 0≦α<0.4, reference information REF_info saying "The signal is congested" is provided to the installer by the audio device 16 and the speaker 17 in a voice at a second volume that is louder than the first volume (see steps S99, S101, S103, and S105).

[0188] Fig. 8 is another flowchart for explaining the detailed operation of step S9 shown in Fig. 4. The flowchart shown in Fig. 8 is a flowchart for explaining the detailed operation of step S9 shown in Fig. 4 in the case where correspondence table TBL2 is used.

[0189] The flowchart shown in FIG. 8 is the same as the flowchart shown in FIG. 5 except that steps S92 to S98 of the flowchart shown in FIG. 5 are designated "step S110," steps S99 to S105 of the flowchart shown in FIG. 5 are designated "step S111," step S91 of the flowchart shown in FIG. 5 is changed to step S112, and steps S113 to S120 are added.

[0190] Referring to FIG. 8, when it is determined in step S8 of FIG. 4 that the reference information REF_info is to be provided in both text and audio, the control means 13 determines whether the index α satisfies 0≦α<0.2 (step S112).

[0191] If it is determined in step S112 that the index α satisfies 0≦α<0.2, the correspondence table TBL1 is replaced with the correspondence table TBL2, and steps S92 to S98 in FIG. 5 are executed in sequence (step S110).

[0192] On the other hand, when it is determined in step S112 that the index α does not satisfy 0≦α<0.2, the control means 13 determines whether or not the index α satisfies 0.2≦α<0.5 (step S113).

[0193] If it is determined in step S113 that the index α satisfies 0.2≦α<0.5, the correspondence table TBL1 is replaced with the correspondence table TBL2, and steps S99 to S105 in FIG. 5 are executed in sequence (step S111).

[0194] On the other hand, when it is determined in step S113 that the index α does not satisfy 0.2≦α<0.5, the control means 13 detects the reference information REF_info of "The radio waves are very congested" from the correspondence table TBL2 (step S114).

[0195] Then, the control means 13 detects the "third color" from the correspondence table TBL2 (step S115).

[0196] Thereafter, the control means 13 detects the "third volume" from the correspondence table TBL2 (step S116).

[0197] In response to this, the control means 13 outputs the text "The signal is very congested" and "Third color" to the display device 15 (step S117).

[0198] Subsequently, the control means 13 outputs the voice "The radio waves are very congested" and the voice "third volume" to the audio device 16 (step S118).

[0199] The display device 15 receives the text "The signal is very congested" and the "third color" from the control means 13. Then, the display device 15 displays the text "The signal is very congested" in the "third color" that is different from the first color and the second color (step S119).

[0200] Thereafter, the audio device 16 receives the voice "The signal is very congested" and the "third volume" from the control means 13. Then, the audio device 16 outputs the voice "The signal is very congested" from the speaker 17 at the "third volume" that is higher than the first volume and the second volume (step S120).

[0201] After step S110, step S111, or step S120, the operation of the base station 1 proceeds to step S1 in FIG.

[0202] Fig. 9 is another flowchart for explaining the detailed operation of step S11 shown in Fig. 4. The flowchart shown in Fig. 9 is a flowchart for explaining the detailed operation of step S11 shown in Fig. 4 in the case where correspondence table TBL2 is used.

[0203] 9 is the same as the flowchart shown in FIG. 5 except that steps S92, S93, S95, and S97 of the flowchart shown in FIG. 5 are designated as "step S110A," steps S99, S100, S102, and S104 of the flowchart shown in FIG. 5 are designated as "step S111A," step S91 of the flowchart shown in FIG. 5 is changed to step S112, and steps S113, S114, S115, S117, and S119 of FIG. 8 are added.

[0204] 9, when it is determined in step S10 of FIG. 4 that the reference information REF_info is to be provided in text, the control means 13 determines whether the index α satisfies 0≦α<0.2 (step S112).

[0205] In step S112, when it is determined that the index α satisfies 0≦α<0.2, the correspondence table TBL1 is replaced with the correspondence table TBL2, and steps S92, S93, S95, and S97 in FIG. 5 are executed in sequence (step S110A).

[0206] On the other hand, when it is determined in step S112 that the index α does not satisfy 0≦α<0.2, the control means 13 determines whether or not the index α satisfies 0.2≦α<0.5 (step S113).

[0207] If it is determined in step S113 that the index α satisfies 0.2≦α<0.5, the correspondence table TBL1 is replaced with the correspondence table TBL2, and steps S99, S100, S102, and S104 in FIG. 5 are executed in sequence (step S111A).

[0208] On the other hand, when it is determined in step S113 that the index α does not satisfy 0.2≦α<0.5, the control means 13 detects the reference information REF_info of "The radio waves are very congested" from the correspondence table TBL2 (step S114).

[0209] Then, the control means 13 detects the "third color" from the correspondence table TBL2 (step S115).

[0210] In response to this, the control means 13 outputs the text "The signal is very congested" and "Third color" to the display device 15 (step S117).

[0211] The display device 15 receives the text "The signal is very congested" and the "third color" from the control means 13. Then, the display device 15 displays the text "The signal is very congested" in the "third color" that is different from the first color and the second color (step S119).

[0212] After step S110A, or after step S111A, or after step S119, the operation of the base station 1 proceeds to step S1 in FIG.

[0213] Fig. 10 is another flowchart for explaining the detailed operation of step S12 shown in Fig. 4. The flowchart shown in Fig. 10 is a flowchart for explaining the detailed operation of step S12 shown in Fig. 4 in the case where correspondence table TBL2 is used.

[0214] The flowchart shown in FIG. 10 is the same as the flowchart shown in FIG. 5 except that steps S92, S94, S96, and S98 of the flowchart shown in FIG. 5 are designated as "step S110B," steps S99, S101, S103, and S105 of the flowchart shown in FIG. 5 are designated as "step S111B," step S91 of the flowchart shown in FIG. 5 is changed to step S112, and steps S113, S114, S116, S118, and S120 of FIG. 8 are added.

[0215] 10, when it is determined in step S10 of FIG. 4 that the reference information REF_info is not to be provided in text, the control means 13 determines whether the index α satisfies 0≦α<0.2 (step S112).

[0216] If it is determined in step S112 that the index α satisfies 0≦α<0.2, the correspondence table TBL1 is replaced with the correspondence table TBL2, and steps S92, S94, S96, and S98 in FIG. 5 are executed in sequence (step S110B).

[0217] On the other hand, when it is determined in step S112 that the index α does not satisfy 0≦α<0.2, the control means 13 determines whether or not the index α satisfies 0.2≦α<0.5 (step S113).

[0218] If it is determined in step S113 that the index α satisfies 0.2≦α<0.5, the correspondence table TBL1 is replaced with the correspondence table TBL2, and steps S99, S101, S103, and S105 in FIG. 5 are executed in sequence (step S111B).

[0219] On the other hand, when it is determined in step S113 that the index α does not satisfy 0.2≦α<0.5, the control means 13 detects the reference information REF_info of "The radio waves are very congested" from the correspondence table TBL2 (step S114).

[0220] Then, the control means 13 detects the "third volume" from the correspondence table TBL2 (step S116).

[0221] Then, the control means 13 outputs the voice "The radio waves are very congested" and the voice "third volume" to the audio device 16 (step S118).

[0222] The audio device 16 receives the voice "The signal is very congested" and the "third volume" from the control means 13. Then, the audio device 16 emits the voice "The signal is very congested" from the speaker 17 at the "third volume" that is louder than the second volume (step S120).

[0223] After step S110B, or after step S111B, or after step S120, the operation of the base station 1 proceeds to step S1 in FIG.

[0224] According to the above-described first embodiment, the base station 1 provides the installer with the reference information REF_info "comprising the availability of radio waves" determined according to the value of the index α in at least one of text and voice.

[0225] Therefore, even if an installer does not have knowledge of wireless, he or she can install the base station 1 by referring to the reference information REF_info.

[0226] In the first embodiment, the operation of the base station 1 may be performed by software, in which case the base station 1 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), and a RAM (Random Access Memory).

[0227] The ROM stores a program Prog_A consisting of steps S1 to S13 shown in FIG. 4 (including the flowcharts shown in FIG. 5, FIG. 6, and FIG. 7), or a program Prog_B consisting of steps S1 to S13 shown in FIG. 4 (including the flowchart shown in FIG. 8 (including steps S92 to S105 of FIG. 5)), the flowchart shown in FIG. 9 (including steps S92, S93, S95, S97, S99, S100, S102, S104 of FIG. 5) and the flowchart shown in FIG. 10 (including steps S92, S94, S96, S98, S99, S101, S103, S105 of FIG. 5)).

[0228] The CPU reads out the program Prog_A from the ROM and executes it, and provides the reference information REF_info in text and audio, or in text only, or in audio only, using the correspondence table TBL1. In this case, the RAM temporarily stores the index α, the correspondence table TBL1, etc.

[0229] The CPU also reads out the program Prog_B from the ROM and executes it, and provides the reference information REF_info in text and audio, or in text only, or in audio only, using the correspondence table TBL2. In this case, the RAM temporarily stores the index α, the correspondence table TBL2, etc.

[0230] [Embodiment 2] In the second embodiment, the control means 13 has a built-in timer. The control means 13 then refers to the built-in timer and determines the timing t CUT When the timing t CUT By counting the number of addresses Add of the senders of data received via the wireless unit 14 for a certain period of time (for example, 10 seconds) from trm (Ntrm is an integer greater than or equal to 1).

[0231] Then, the control means 13 determines the number N of terminal devices. trm Based on this, "Number N trm " is output to the display device 15, and "Number N trm " is output to the audio device 16.

[0232] The display device 15 displays the number N trm " from the control means 13. Then, the display device 15 receives the sentence "Number N trm " sentence.

[0233] Also, the audio device 16 is trm " from the control means 13. Then, the voice device 16 receives the voice "Number N trm " is output from the speaker 17.

[0234] The number N of terminal devices that are performing wireless communication with the base station 1 within the wireless communication range REG1 of the base station 1 trm By providing this written and audio guidance, the installer can know whether there is a terminal device that cannot perform wireless communication with the base station 1.

[0235] FIG. 11 is a flowchart for explaining the operation of the base station 1 shown in FIG. 2 in the second embodiment.

[0236] The flowchart shown in FIG. 11 is the same as the flowchart shown in FIG. 4, except that steps S3, S5 to S7, S9, S11, and S12 of the flowchart shown in FIG. 4 are replaced with steps S9A, S11A, S12A, S14, and S15.

[0237] Referring to FIG. 11, after step S2, the control means 13 of the base station 1 refers to the built-in timer and counts the number N of terminal devices. trm The timing t to count CUT It is determined whether or not this is the case (step S14).

[0238] In step S14, the number of terminal devices N trm The timing t to count CUT If it is determined that the above-mentioned step S4 is not true, the operation of the base station 1 proceeds to step S14.

[0239] Then, in step S14, the number of terminal devices N trm The timing t to count CUT Steps S14 and S4 are repeatedly executed until it is determined that the above condition is met.

[0240] Then, in step S14, the number of terminal devices N trm The timing t to count CUT If it is determined that the timing t CUT By counting the number of addresses Add of the senders of data received via the wireless unit 14 during a certain period CPT from trm is counted (step S15).

[0241] Then, the above-mentioned step S8 is executed. Then, when it is determined in step S8 that the reference information REF_info is to be provided both in text and audio, the control means 13, the display device 15 and the audio device 16 set the number N trm " and "Quantity N trm " is output from the speaker 17 (step S9A).

[0242] On the other hand, when it is determined in step S8 that the reference information REF_info will not be provided in both text and audio, and when it is determined in step S10 that the reference information REF_info will be provided in text, the control means 13 and the display device 15 trm By displaying the sentence, "number N trm " sentence is provided (step S11A).

[0243] On the other hand, when it is determined in step S10 that the reference information REF_info is not provided in text, the control means 13 and the voice device 16 trm " is output from the speaker 17, trm " is provided (step S12A).

[0244] Then, after step S9A, or after step S11A, or after step S12A, or after step S13, the operation of base station 1 transitions to step S1, and as long as base station 1 is operating, the above-mentioned steps S1, S2, S4, S8, S9A, S10, S11A, S12A, S13 to S15 are repeatedly executed.

[0245] In the flowchart shown in FIG. 11, when the installer presses "ON1" of the switch 12, it is determined in step S1 that the signal S_RQE (=signal S_RQE_1) has been received, and step S2 is executed.

[0246] Then, in step S14, the number N of terminal devices present within the wireless communication range REG1 of the base station 1 is calculated. trm The timing t to count CUT If it is determined that this is the case, step S15 is executed.

[0247] Thereafter, in step S8, it is determined that the reference information REF_info is to be provided both in text and audio, and in step S9A, the reference information REF_info (=“number N trm ”) is provided to the installer in both text and audio.

[0248] In the flowchart shown in FIG. 11, when the installer presses "ON2" of the switch 12, it is determined in step S1 that the signal S_RQE (=signal S_RQE_2) has been received, and step S2 is executed.

[0249] Then, in step S14, the number N of terminal devices present within the wireless communication range REG1 of the base station 1 is calculated. trmThe timing t to count CUT If it is determined that this is the case, step S15 is executed.

[0250] Thereafter, in step S8, it is determined that the reference information REF_info will not be provided both in text and audio, and in step S10, it is determined that the reference information REF_info will be provided in text, and in step S11A, the reference information REF_info (=“number N trm " is provided to the installer in writing.

[0251] Furthermore, in the flowchart shown in FIG. 11, when the installer presses "ON3" of the switch 12, it is determined in step S1 that the signal S_RQE (=signal S_RQE_3) has been received, and step S2 is executed.

[0252] Then, in step S14, the number N of terminal devices present within the wireless communication range REG1 of the base station 1 is calculated. trm The timing t to count CUT If it is determined that this is the case, step S15 is executed.

[0253] Thereafter, in step S8, it is determined that the reference information REF_info will not be provided in both text and audio, and in step S10, it is determined that the reference information REF_info will not be provided in text, and in step S12A, the reference information REF_info (="number N trm ”) is provided to the installer via audio.

[0254] Therefore, according to the flowchart shown in FIG. 11, the reference information REF_info (=“number N”) is provided in the provision method desired by the installer (=“provision method by text and voice”, “provision method by text”, or “provision method by voice”). trm " is provided to the installer, so that the installer can easily understand whether there is a terminal device that is out of service.

[0255] In the second embodiment, the operation of the base station 1 may be performed by software, in which case the base station 1 includes a CPU, a ROM, and a RAM.

[0256] The ROM stores a program Prog_C that includes steps S1, S2, S4, S8, S9A, S10, S11A, S12A, and S13 to S15 shown in FIG.

[0257] The CPU reads the program Prog_C from the ROM and executes it, trm " and / or "Number N trm In this case, the RAM is set to the number N of terminal devices. trm etc. are temporarily stored.

[0258] In the second embodiment, the number of terminal devices N trm As the number N increases, trm Depending on the "number N trm " may be displayed in different colors, and the number of terminal devices N trm As the number N increases, trm Depending on the "number N trm " may be output at different volumes.

[0259] In this case, for example, the number of terminal devices N trm You can also change the color of the text and the volume of the audio every time 10 units are added.

[0260] [Embodiment 3] In the third embodiment, the control means 13 has a built-in timer. The control means 13 then refers to the built-in timer and determines the number N of terminal devices present within the wireless communication range REG1 of the base station 1. trm The timing t to count CUT At timing t CUT The number of terminal devices N within the wireless communication range REG1 of the base station 1 is calculated by counting the number of addresses Add of the senders of data received via the wireless unit 14 for a certain period of time (for example, 10 seconds). trmCounting N trm N received from terminal devices trm N of the received signals trm Detect received signal strengths RSSI.

[0261] Then, the control means 13 calculates the number N of terminal devices present within the wireless communication range REG1 of the base station 1. trm Based on this, "Currently, N trm The message "Number of terminal devices connected" is output to the display device 15, and the message "Currently, N trm The voice message "Currently, N terminal devices are connected" is output to the audio device 16. trm The display device 15 displays the message "Currently, N terminal devices are connected." trm The voice "number of terminal devices are connected" is output by the voice device 16 and the speaker 17.

[0262] In addition, the control means 13 trm The minimum value RSSI_min of the received signal strength indicators RSSI is detected.

[0263] In the third embodiment, the control means 13 has a built-in correspondence table TBL3 shown in Table 3.

[0264] [Table 3]

[0265] Then, when the received signal strength RSSI_TM_min of the data transmitted from the terminal device TM_min from which the minimum value RSSI_min of the received signal strength RSSI was obtained is less than -76 dBm (when RSSI_TM_min<-76 dBm), the control means 13 outputs the text "The signal is weak" and a first color to the display device 15, and outputs the voice "The signal is weak" and a first volume to the audio device 16.

[0266] In addition, when the received signal strength RSSI_TM_min of data transmitted from the terminal device TM_min is greater than or equal to -76 dBm and less than -66 dBm (when -76 dBm≦RSSI_TM_min<-66 dBm), the control means 13 outputs the text "The signal is a little weak" and a second color to the display device 15, and outputs the voice "The signal is a little weak" and a second volume to the audio device 16.

[0267] Furthermore, when the received signal strength RSSI_TM_min of the data transmitted from the terminal device TM_min is -66 dBm or higher (when -66 dBm≦RSSI_TM_min), the control means 13 outputs the text "The signal is strong" and a third color to the display device 15, and outputs the voice "The signal is strong" and a third volume to the audio device 16.

[0268] When RSSI_TM_min<-76 dBm, upon receiving the message "The signal is weak" and the first color from the control means 13, the display device 15 displays the message "The signal is weak" in the "first color."

[0269] Also, when -76 dBm≦RSSI_TM_min<-66 dBm, upon receiving the text "The signal is a little weak" and the second color from the control means 13, the display device 15 displays the text "The signal is a little weak" in the "second color" different from the first color.

[0270] Furthermore, when -66 dBm≦RSSI_TM_min, upon receiving the text "The signal is strong" and the third color from the control means 13, the display device 15 displays the text "The signal is strong" in the "third color" different from the first color and the second color.

[0271] On the other hand, when RSSI_TM_min<-76dBm, when the audio device 16 receives the voice "The signal is weak" and the first volume from the control means 13, it outputs the voice "The signal is weak" from the speaker 17 at the "first volume".

[0272] Also, when -76 dBm≦RSSI_TM_min<-66 dBm, upon receiving the voice "The signal is a little weak" and the second volume from the control means 13, the audio device 16 outputs the voice "The signal is a little weak" from the speaker 17 at the "second volume" that is higher than the first volume.

[0273] Furthermore, when -66 dBm≦RSSI_TM_min, when the audio device 16 receives the voice "The signal is strong" and the third volume from the control means 13, it outputs the voice "The signal is strong" from the speaker 17 at the "third volume" that is louder than the second volume.

[0274] FIG. 12 is a flowchart for explaining the operation of the base station 1 shown in FIG. 2 in the third embodiment.

[0275] The flowchart shown in FIG. 12 is the same as the flowchart shown in FIG. 4, except that steps S3, S5 to S7, S9, S11, and S12 of the flowchart shown in FIG. 4 are replaced with steps S17 to S26.

[0276] Referring to FIG. 12, when the operation of base station 1 in the third embodiment is started, steps S1 and S2 described above are executed in sequence.

[0277] After step S2, the control means 13 of the base station 1 calculates the number N of terminal devices present within the wireless communication range REG1 of the base station 1. trm The timing t to count CUT It is determined whether or not this has occurred (step S17).

[0278] In step S17, the number N of terminal devices present within the wireless communication range REG1 of the base station 1 is calculated. trm The timing t to count CUT If it is determined that the above-mentioned condition is not met, the above-mentioned step S4 is executed, and after step S4, the operation of the base station 1 proceeds to step S17.

[0279] Then, in step S17, the number N of terminal devices present within the wireless communication range REG1 of the base station 1 is calculated. trm The timing t to count CUT Steps S4 and S17 are repeatedly executed until it is determined that the

[0280] Then, in step S17, the number N of terminal devices present within the wireless communication range REG1 of the base station 1 is calculated. trm The timing t to count CUT If it is determined that the time has come, the base station 1 executes steps S18 to S26.

[0281] Specifically, the control means 13 of the base station 1 determines the number N of terminal devices within the wireless communication range REG1. trm Counting N trm N from terminal devices trm The received signal strengths RSSI are detected and recorded (step S18).

[0282] Thereafter, the control means 13 trm N from terminal devices trm The minimum value RSSI_min of the received signal strength indicators RSSI is detected (step S19).

[0283] Then, the control means 13 detects the received signal strength RSSI_TM_min of the data transmitted from the terminal device TM for which the minimum value RSSI_min was obtained (step S20).

[0284] Then, the control means 13 executes the above-mentioned step S8. Then, when it is determined in step S8 that the reference information REF_info is to be provided both in text and audio, the control means 13, the display device 15 and the audio device 16 set the number N trm " is given to the installer in text and voice (step S21).

[0285] Specifically, the control means 13 determines the number N trm " is output to the display device 15, and "Number N trm” to the audio device 16, and the display device 15 outputs the message “Number N trm " from the control means 13, trm " and the voice device 16 displays the sentence "Number N trm " from the control means 13, trm " is output from the speaker 17.

[0286] After step S21, the control means 13, the display device 15 and the audio device 16 provide the reference information REF_info by changing the color according to the value of the received signal strength RSSI_TM_min, and also provide the reference information REF_info to the installer by changing the volume according to the value of the received signal strength RSSI_TM_min (step S22).

[0287] On the other hand, if it is determined in step S8 that the reference information REF_info will not be provided in both text and audio, the above-mentioned step S10 is executed.

[0288] Then, in the above-mentioned step S10, when it is determined that the reference information REF_info is to be provided in text, the control means 13 and the display device 15 trm " is given to the installer in text form (step S23). Specifically, the control means 13 gives the installer a message saying "Number N trm " is output to the display device 15, and the display device 15 displays "Number N trm " from the control means 13, trm " sentence.

[0289] Thereafter, the control means 13 and the display device 15 change the color according to the value of the received signal strength RSSI_TM_min and provide the reference information REF_info to the installer (step S24).

[0290] On the other hand, when it is determined in step S10 that the reference information is not to be provided in text form, the control means 13 and the voice device 16 select "number N trm" is announced to the installer by voice (step S25). Specifically, the control means 13 announces "Number N trm ” to the audio device 16, and the audio device 16 outputs the voice “Number N trm " from the control means 13, trm " sound will be output from the speaker.

[0291] Thereafter, the control means 13 and the audio device 16 change the volume according to the value of the received signal strength RSSI_TM_min and provide the reference information REF_info to the installer (step S26).

[0292] Then, after step S22, or after step S24, or after step S26, or after step S13, the operation of the base station 1 proceeds to step S1. Then, as long as the base station 1 is operating, the above-mentioned steps S1, S2, S4, S8, S10, S13, and S17 to S26 are repeatedly executed.

[0293] In the flowchart shown in FIG. 12, when the installer presses "ON1" of the switch 12, it is determined in step S1 that the signal S_RQE (=signal S_RQE_1) has been received, and step S2 is executed.

[0294] Then, in step S17, the number N of terminal devices present within the wireless communication range REG1 of the base station 1 is calculated. trm The timing t to count CUT If it is determined that this is the case, steps S18 to S20 are executed in sequence.

[0295] Then, in step S8, it is determined that the reference information REF_info is to be provided both in text and audio, and steps S21 and S22 are executed in sequence, and the number N of terminal devices within the wireless communication range REG1 of the base station 1 is calculated. trm is provided to the installer in text and voice, and reference information REF_info is provided to the installer in text and voice (see steps S21 and S22).

[0296] In the flowchart shown in FIG. 12, when the installer presses "ON2" of the switch 12, it is determined in step S1 that the signal S_RQE (=signal S_RQE_2) has been received, and step S2 is executed.

[0297] Then, in step S17, the number N of terminal devices present within the wireless communication range REG1 of the base station 1 is calculated. trm The timing t to count CUT If it is determined that this is the case, steps S18 to S20 are executed in sequence.

[0298] Then, in step S8, it is determined that the reference information REF_info will not be provided in both text and voice, and in step S10, it is determined that the reference information REF_info will be provided in text, and steps S23 and S24 are executed sequentially, and the number N of terminal devices within the wireless communication range REG1 of the base station 1 is trm is provided to the installer in text form, and reference information REF_info is also provided to the installer in text form (see steps S23 and S24).

[0299] Furthermore, in the flowchart shown in FIG. 12, when the installer presses "ON3" of the switch 12, it is determined in step S1 that the signal S_RQE (=signal S_RQE_3) has been received, and step S2 is executed.

[0300] Then, in step S17, the number N of terminal devices present within the wireless communication range REG1 of the base station 1 is calculated. trm The timing t to count CUT If it is determined that this is the case, steps S18 to S20 are executed in sequence.

[0301] Then, in step S8, it is determined that the reference information REF_info will not be provided in both text and voice, and in step S10, it is determined that the reference information REF_info will not be provided in text, and steps S25 and S26 are executed sequentially, and the number N of terminal devices within the wireless communication range REG1 of the base station 1 is trmis announced to the installer by voice, and reference information REF_info is also provided to the installer by voice (see steps S25 and S26).

[0302] Therefore, the number N of terminal devices within the wireless communication range REG1 of the base station 1 is determined by the method desired by the installer. trm and reference information REF_info can be provided to the installer.

[0303] 13 and 14 are first and second flowcharts, respectively, for explaining the detailed operation of step S22 in FIG.

[0304] Referring to FIG. 13, after step S21 in FIG. 12, the control means 13 determines whether or not the received signal strength RSSI_TM_min satisfies RSSI_TM_min<-76 dBm (step S221).

[0305] When it is determined in step S221 that the received signal strength RSSI_TM_min satisfies RSSI_TM_min<-76 dBm, the control means 13 detects the reference information REF_info of "Weak signal" from the correspondence table TBL3 (step S222).

[0306] Then, the control means 13 detects the "first color" from the correspondence table TBL3 (step S223), and detects the "first volume" from the correspondence table TBL3 (step S224).

[0307] Thereafter, the control means 13 outputs the text "The signal is weak" and "First color" to the display device 15 (step S225).

[0308] Subsequently, the control means 13 outputs the voice "The signal is weak" and the "first volume" to the audio device 16 (step S226).

[0309] In response to this, the display device 15 displays the text "The signal is weak" in the "first color" (step S227).

[0310] Furthermore, the audio device 16 outputs the voice message "The signal is weak" from the speaker 17 at the "first volume" (step S228).

[0311] On the other hand, when it is determined in step S221 that the received signal strength RSSI_TM_min does not satisfy RSSI_TM_min<-76 dBm, the control means 13 determines whether or not the received signal strength RSSI_TM_min satisfies -76 dBm≦RSSI_TM_min<-66 dBm (step S229).

[0312] When it is determined in step S229 that the received signal strength RSSI_TM_min satisfies -76 dBm≦RSSI_TM_min<-66 dBm, the control means 13 detects the reference information REF_info "The signal is a little weak" from the correspondence table TBL3 (step S230).

[0313] Then, the control means 13 detects the "second color" from the correspondence table TBL3 (step S231), and detects the "second volume" from the correspondence table TBL3 (step S232).

[0314] Thereafter, the control means 13 outputs the text "The signal is a little weak" and "Second color" to the display device 15 (step S233).

[0315] Subsequently, the control means 13 outputs the voice "The signal is a little weak" and the "second volume" to the audio device 16 (step S234).

[0316] In response to this, the display device 15 displays the text "The signal is a little weak" in the "second color" (step S235).

[0317] Furthermore, the audio device 16 outputs the voice message "The signal is a little weak" from the speaker 17 at the "second volume" (step S236).

[0318] On the other hand, if it is determined in step S229 that the received signal strength RSSI_TM_min does not satisfy −76 dBm≦RSSI_TM_min<−66 dBm, the operation of the base station 1 proceeds to step S237 in FIG.

[0319] Referring to FIG. 14, the control means 13 detects the reference information REF_info of "The signal is strong" from the correspondence table TBL3 (step S237).

[0320] Then, the control means 13 detects the "third color" from the correspondence table TBL3 (step S238), and detects the "third volume" from the correspondence table TBL3 (step S239).

[0321] Thereafter, the control means 13 outputs the text "The signal is strong" and "Third color" to the display device 15 (step S240).

[0322] Subsequently, the control means 13 outputs the voice "The signal is strong" and the "third volume" to the audio device 16 (step S241).

[0323] In response to this, the display device 15 displays the text "The signal is strong" in a "third color" different from the first and second colors (step S242).

[0324] Furthermore, the audio device 16 outputs the voice "The signal is strong" from the speaker 17 at a "third volume" that is larger than the first volume and the second volume (step S243).

[0325] After step S228, step S236, or step S243, the operation of the base station 1 proceeds to step S1 in FIG.

[0326] FIG. 15 is a flowchart for explaining the detailed operation of step S24 in FIG.

[0327] Referring to FIG. 15, after step S23 in FIG. 12, the control means 13 determines whether or not the received signal strength RSSI_TM_min satisfies RSSI_TM_min<-76 dBm (step S250).

[0328] If it is determined in step S250 that the received signal strength RSSI_TM_min satisfies RSSI_TM_min<-76 dBm, steps S222, S223, S225, and S227 in FIG. 13 are executed in sequence (step S251).

[0329] On the other hand, when it is determined in step S250 that the received signal strength RSSI_TM_min does not satisfy RSSI_TM_min<-76 dBm, the control means 13 determines whether or not the received signal strength RSSI_TM_min satisfies -76 dBm≦RSSI_TM_min<-66 dBm (step S252).

[0330] If it is determined in step S252 that the received signal strength RSSI_TM_min satisfies −76 dBm≦RSSI_TM_min<−66 dBm, steps S230, S231, S233, and S235 in FIG. 13 are executed in sequence (step S253).

[0331] On the other hand, if it is determined in step S252 that the received signal strength RSSI_TM_min does not satisfy −76 dBm≦RSSI_TM_min<−66 dBm, steps S237, S238, S240, and S242 in FIG. 14 are executed in sequence (step S254).

[0332] After step S251, step S253, or step S254, the operation of the base station 1 proceeds to step S1 in FIG.

[0333] 15, when it is determined in step S250 that the received signal strength RSSI_TM_min satisfies RSSI_TM_min<-76 dBm, in step S251, the control means 13 detects the reference information REF_info for "The signal is weak" and the "first color" from the correspondence table TBL3 (see steps S222 and S223 in FIG. 13). Then, the control means 13 outputs the text "The signal is weak" and the "first color" to the display device 15 (see step S225 in FIG. 13). Upon receiving the text "The signal is weak" and the "first color" from the control means 13, the display device 15 displays the text "The signal is weak" in the "first color" (see step S227 in FIG. 13).

[0334] Also, in the flowchart shown in Figure 15, when it is determined in step S250 that the received signal strength RSSI_TM_min does not satisfy RSSI_TM_min<-76 dBm, it is determined in step S252 whether the received signal strength RSSI_TM_min satisfies -76 dBm≦RSSI_TM_min<-66 dBm.

[0335] Then, when it is determined in step S252 that the received signal strength RSSI_TM_min satisfies -76 dBm≦RSSI_TM_min<-66 dBm, in step S253, the control means 13 detects the reference information REF_info for "The signal is a little weak" and the "second color" from the correspondence table TBL3 (see steps S230 and S231 in FIG. 13). Then, the control means 13 outputs the text "The signal is a little weak" and the "second color" to the display device 15 (see step S233 in FIG. 13). Upon receiving the text "The signal is a little weak" and the "second color" from the control means 13, the display device 15 displays the text "The signal is a little weak" in the "second color" (see step S235 in FIG. 13).

[0336] 15, when it is determined in step S252 that the received signal strength RSSI_TM_min does not satisfy -76 dBm≦RSSI_TM_min<-66 dBm, in step S254, the control means 13 detects the reference information REF_info for "The signal is strong" and the "third color" from the correspondence table TBL3 (see steps S237 and S238 in FIG. 14). Then, the control means 13 outputs the text "The signal is strong" and the "third color" to the display device 15 (see step S240 in FIG. 14). Upon receiving the text "The signal is strong" and the "third color" from the control means 13, the display device 15 displays the text "The signal is strong" in the "third color" (see step S242 in FIG. 14).

[0337] As a result, according to the flowchart shown in Figure 15, base station 1 displays the text "The signal is weak" in the "first color", or the text "The signal is a little weak" in the "second color", or the text "The signal is strong" in the "third color" depending on the level of the received signal strength RSSI_TM_min.

[0338] Therefore, even if the installer has difficulty hearing the sound, he or she can easily determine the location to install the base station 1 by referring to the reference information REF_info displayed on the display device 15 of the base station 1.

[0339] FIG. 16 is a flowchart for explaining the detailed operation of step S26 in FIG.

[0340] Referring to FIG. 16, after step S25 in FIG. 12, the control means 13 determines whether or not the received signal strength RSSI_TM_min satisfies RSSI_TM_min<-76 dBm (step S260).

[0341] If it is determined in step S260 that the received signal strength RSSI_TM_min satisfies RSSI_TM_min<-76 dBm, steps S222, S224, S226, and S228 in FIG. 13 are executed in sequence (step S261).

[0342] On the other hand, when it is determined in step S260 that the received signal strength RSSI_TM_min does not satisfy RSSI_TM_min<-76 dBm, the control means 13 determines whether or not the received signal strength RSSI_TM_min satisfies -76 dBm≦RSSI_TM_min<-66 dBm (step S262).

[0343] If it is determined in step S262 that the received signal strength RSSI_TM_min satisfies −76 dBm≦RSSI_TM_min<−66 dBm, steps S230, S232, S234, and S236 in FIG. 13 are executed in sequence (step S263).

[0344] On the other hand, if it is determined in step S262 that the received signal strength RSSI_TM_min does not satisfy −76 dBm≦RSSI_TM_min<−66 dBm, steps S237, S239, S241, and S243 in FIG. 14 are executed in sequence (step S264).

[0345] After step S261, step S263, or step S264, the operation of the base station 1 proceeds to step S1 in FIG.

[0346] 16, when it is determined in step S260 that the received signal strength RSSI_TM_min satisfies RSSI_TM_min<-76 dBm, in step S261, the control means 13 detects the reference information REF_info for "The signal is weak" and the "first volume" from the correspondence table TBL3 (see steps S222 and S224 in FIG. 13). Then, the control means 13 outputs the sentence "The signal is weak" and the "first volume" to the audio device 16 (see step S226 in FIG. 13). Upon receiving the sentence "The signal is weak" and the "first volume" from the control means 13, the audio device 16 outputs the sentence "The signal is weak" at the "first volume" from the speaker 17 (see step S228 in FIG. 13).

[0347] Also, in the flowchart shown in Figure 16, when it is determined in step S260 that the received signal strength RSSI_TM_min does not satisfy RSSI_TM_min<-76 dBm, it is determined in step S262 whether the received signal strength RSSI_TM_min satisfies -76 dBm≦RSSI_TM_min<-66 dBm.

[0348] Then, when it is determined in step S262 that the received signal strength RSSI_TM_min satisfies -76 dBm≦RSSI_TM_min<-66 dBm, in step S263, the control means 13 detects the reference information REF_info of "The signal is a little weak" and the "second volume" from the correspondence table TBL3 (see steps S230 and S232 in FIG. 13). Then, the control means 13 outputs the voice of "The signal is a little weak" and the "second volume" to the audio device 16 (see step S234 in FIG. 13). Upon receiving the voice of "The signal is a little weak" and the "second volume" from the control means 13, the audio device 16 outputs the voice of "The signal is a little weak" at the "second volume" from the speaker 17 (see step S236 in FIG. 13).

[0349] 16, when it is determined in step S262 that the received signal strength RSSI_TM_min does not satisfy -76 dBm≦RSSI_TM_min<-66 dBm, in step S264, the control means 13 detects the reference information REF_info for "The signal is strong" and the "third volume" from the correspondence table TBL3 (see steps S237 and S239 in FIG. 14). Then, the control means 13 outputs the voice of "The signal is strong" and the "third volume" to the audio device 16 (see step S241 in FIG. 14). Upon receiving the voice of "The signal is strong" and the "third volume" from the control means 13, the audio device 16 outputs the voice of "The signal is strong" at the "third volume" from the speaker 17 (see step S243 in FIG. 14).

[0350] As a result, according to the flowchart shown in FIG. 16, the base station 1 outputs the voice "The signal is weak" from the speaker 17 at the "first volume", or the voice "The signal is a little weak" from the speaker 17 at the "second volume", or the voice "The signal is strong" from the speaker 17 at the "third volume", depending on the level of the received signal strength RSSI_TM_min.

[0351] Therefore, even if the installer is visually impaired, he or she can easily determine the location where to install the base station 1 by listening to the reference information REF_info output from the audio device 16 of the base station 1.

[0352] In the third embodiment, the operation of the base station 1 may be performed by software, in which case the base station 1 includes a CPU, a ROM, and a RAM.

[0353] The ROM stores a program Prog_D consisting of steps S1, S2, S4, S8, S10, S13, and S17 to S26 shown in FIG. 12 (including the flowcharts shown in FIGS. 13 to 16).

[0354] The CPU reads and executes the program Prog_D from the ROM and provides the installer with reference information REF_info in at least one of text and voice, among reference information REF_info for "Weak signal," reference information REF_info for "Slightly weak signal," and reference information REF_info for "Strong signal." In this case, the RAM temporarily stores the reference information REF_info, color, volume, correspondence table TBL3, etc.

[0355] In an embodiment of the present invention, base station 1 may execute at least one of the following flowcharts: (1) steps S1 to S12 of the flowchart shown in FIG. 4 (including the flowcharts shown in FIGS. 5 to 7 or the flowcharts shown in FIGS. 8 to 10); (2) steps S1, S2, S4, S8, S9A, S10, S11A, S12A, S13 to S15 of the flowchart shown in FIG. 11 (including the flowcharts shown in FIGS. 13 to 16); and (3) steps S1, S2, S4, S8, S10, S13, S17 to S26 of the flowchart shown in FIG. 12 (including the flowcharts shown in FIGS. 13 to 16).

[0356] In this case, the base station 1 includes a switch 12A shown in FIG. 17 instead of the switch 12 shown in FIG.

[0357] Fig. 17 is a schematic diagram of another switch. Referring to Fig. 17, switch 12A is made up of switches 12-1 to 12-7.

[0358] The switches 12-1 to 12-7 are each comprised of the above-mentioned "ON1", "ON2", "ON3", and "OFF".

[0359] Furthermore, switch 12-1 is provided in correspondence with the implementation of the first embodiment described above. Switch 12-2 is provided in correspondence with the implementation of the second embodiment described above. Switch 12-3 is provided in correspondence with the implementation of the third embodiment described above. Switch 12-4 is provided in correspondence with the implementation of the first and second embodiments described above. Switch 12-5 is provided in correspondence with the implementation of the first and third embodiments described above. Switch 12-6 is provided in correspondence with the implementation of the second and third embodiments described above. Switch 12-7 is provided in correspondence with the implementation of the first to third embodiments described above.

[0360] Tables 4 and 5 show the correspondence between the switch 12, the embodiment, and the reference information REF_info.

[0361] Note that Table 5 is obtained by changing the reference information REF_info="(1) Signal is clear, (2) Signal is congested" in Table 4, embodiment 1, to reference information REF_info="(1) Signal is clear, (2) Signal is congested, and (3) Signal is very congested."

[0362] [Table 4]

[0363] [Table 5]

[0364] As shown in Tables 4 and 5, when the installer desires "reference information REF_info for the first embodiment" to "reference information REF_info for the first to third embodiments," he presses switches 12-1 to 12-7, respectively.

[0365] Each of switches 12-1 to 12-7 has "ON1", "ON2", and "ON3", so that the installer, for example, when he / she desires reference information REF_info in embodiment 1 in both text and audio, presses "ON1" of switch 12-1; when he / she desires reference information REF_info in embodiment 1 in text only, presses "ON2" of switch 12-1; and when he / she desires reference information REF_info in embodiment 1 in audio only, presses "ON3" of switch 12-1.

[0366] The same applies when the installer desires the reference information REF_info in "Embodiment 2" to "Embodiments 1 to 3."

[0367] When the installer presses any of switches 12-1 to 12-7, "ON1," "ON2," or "ON3," switch 12A accepts a first mode in which reference information REF_info is provided to the installer, and when the installer presses any of switches 12-1 to 12-7, "OFF," switch 12A accepts a second mode in which reference information REF_info is not provided to the installer.

[0368] When "ON1" of the switch 12-1 is pressed, the switch 12A outputs to the control means 13 a signal S_RQE_1_12-1 indicating that the installer wishes to receive reference information REF_info in text and voice.

[0369] When "ON2" of the switch 12-1 is pressed, the switch 12A outputs to the control means 13 a signal S_RQE_2_12-1 indicating that the installer wishes to provide reference information REF_info in text only.

[0370] Furthermore, when "ON3" of the switch 12-1 is pressed, the switch 12A outputs to the control means 13 a signal S_RQE_3_12-1 indicating that the installer wishes to receive reference information REF_info by voice only.

[0371] On the other hand, when the switch 12-1 is pressed to "OFF", the switch 12A outputs a signal S_RQE_no_12-1 to the control means 13 indicating that the installer does not wish to provide the reference information REF_info.

[0372] The same applies to each of the switches 12-2 to 12-7.

[0373] When the base station 1 executes at least one of the first to third embodiments, the control means 13 of the base station 1 incorporates a correspondence table TBL4 shown in Table 6.

[0374] [Table 6]

[0375] When the control means 13 has the correspondence table TBL4 built in, the reference information REF_info in embodiment 1 consists of either one of [“Radio signal is free” and “Radio signal is congested”], or one of [“Radio signal is free”, “Radio signal is congested” and “Radio signal is very congested”].

[0376] When the control means 13 of the base station 1 receives any one of the signals "S_RQE_1_12-1 to S_RQE_3_12-1" from the switch 12A, the control means 13 of the base station 1, the display device 15 and the audio device 16 execute steps S1 to S12 of the flowchart shown in Figure 4 in embodiment 1 (including the flowcharts shown in Figures 5 to 7 or the flowcharts shown in Figures 8 to 10).

[0377] Furthermore, when the control means 13 of the base station 1 receives any one of the signals "S_RQE_1_12-2 to S_RQE_3_12-2" from the switch 12A, the control means 13 of the base station 1, the display device 15 and the audio device 16 execute S1, S2, S4, S8, S9A, S10, S11A, S12A, S13 to S15 of the flowchart shown in Figure 11 in embodiment 2.

[0378] Furthermore, when the control means 13 of the base station 1 receives any one of the signals "S_RQE_1_12-3 to S_RQE_3_12-3" from the switch 12A, the control means 13 of the base station 1, the display device 15 and the audio device 16 execute steps S1, S2, S4, S8, S10, S13, S17 to S26 of the flowchart shown in Figure 12 in embodiment 3 (including the flowcharts shown in Figures 13 to 16).

[0379] Furthermore, when the control means 13 of the base station 1 receives any one of the signals "S_RQE_1_12-1 to S_RQE_3_12-1" and any one of the signals "S_RQE_1_12-2 to S_RQE_3_12-2" from the switch 12A, the control means 13 of the base station 1, the display device 15 and the audio device 16 execute steps S1 to S12 of the flowchart shown in FIG. 4 in embodiments 1 and 2 (including the flowcharts shown in FIGS. 5 to 7 or the flowcharts shown in FIGS. 8 to 10) and steps S1, S2, S4, S8, S9A, S10, S11A, S12A, S13 to S15 of the flowchart shown in FIG. 11.

[0380] Furthermore, when the control means 13 of the base station 1 receives any one of the signals "S_RQE_1_12-1 to S_RQE_3_12-1" and any one of the signals "S_RQE_1_12-3 to S_RQE_3_12-3" from the switch 12A, the control means 13 of the base station 1, the display device 15 and the audio device 16 execute steps S1 to S12 of the flowchart shown in Figure 4 (including the flowcharts shown in Figures 5 to 7 or the flowcharts shown in Figures 8 to 10) and steps S1, S2, S4, S8, S10, S13, S17 to S26 of the flowchart shown in Figure 12 (including the flowcharts shown in Figures 13 to 16).

[0381] Furthermore, when the control means 13 of the base station 1 receives any one of the signals "S_RQE_1_12-2 to S_RQE_3_12-2" and any one of the signals "S_RQE_1_12-3 to S_RQE_3_12-3" from the switch 12A, the control means 13 of the base station 1, the display device 15 and the audio device 16 execute steps S1, S2, S4, S8, S9A, S10, S11A, S12A, S13 to S15 of the flowchart shown in FIG. 11 and steps S1, S2, S4, S8, S10, S13, S17 to S26 of the flowchart shown in FIG. 12 (including the flowcharts shown in FIGS. 13 to 16).

[0382] Furthermore, when the control means 13 of the base station 1 receives any one of the signals "S_RQE_1_12-1 to S_RQE_3_12-1", any one of the signals "S_RQE_1_12-2 to S_RQE_3_12-2", and any one of the signals "S_RQE_1_12-3 to S_RQE_3_12-3" from the switch 12A, the control means 13 of the base station 1, the display device 15, and the audio device 16 perform the following operations as shown in FIG. 11A, S12A, and S13 to S15 of the flowchart shown in FIG. 11, and steps S1, S2, S4, S8, S10, S13, and S17 to S26 of the flowchart shown in FIG. 12A (including the flowcharts shown in FIGS. 13 to 16).

[0383] FIG. 18 is a flowchart for explaining the operation of the base station 1 when at least one of the first to third embodiments is executed.

[0384] 18, when the operation of the base station 1 starts, the control means 13 of the base station 1 determines whether or not to execute the first embodiment (step S200). In this case, the control means 13 determines to execute the first embodiment when it receives any one of signals S_RQE_1_12-1 to S_RQE_3_12-1 from the switch 12A, and determines not to execute the first embodiment when it does not receive all of signals S_RQE_1_12-1 to S_RQE_3_12-1 from the switch 12A.

[0385] When it is determined in step S200 that embodiment 1 is to be executed, the control means 13, the display device 15 and the audio device 16 execute steps S1 to S12 of the flowchart shown in Figure 4 (including the flowcharts shown in Figures 5 to 7 or the flowcharts shown in Figures 8 to 10) (step S201).

[0386] On the other hand, when it is determined in step S200 that the first embodiment will not be executed, the control means 13 determines whether or not to execute the second embodiment (step S202). In this case, the control means 13 determines to execute the second embodiment when it receives any one of the signals S_RQE_1_12-2 to S_RQE_3_12-2 from the switch 12A, and determines not to execute the second embodiment when it does not receive all of the signals S_RQE_1_12-2 to S_RQE_3_12-2 from the switch 12A.

[0387] When it is determined in step S202 that embodiment 2 is to be executed, the control means 13, the display device 15, and the audio device 16 execute S1, S2, S4, S8, S9A, S10, S11A, S12A, S13, S14, and S15 of the flowchart shown in FIG. 11 (step S203).

[0388] On the other hand, when it is determined in step S202 that the second embodiment will not be executed, the control means 13 determines whether or not to execute the third embodiment (step S204). In this case, the control means 13 determines to execute the third embodiment when it receives any one of the signals S_RQE_1_12-3 to S_RQE_3_12-3 from the switch 12A, and determines not to execute the third embodiment when it does not receive all of the signals S_RQE_1_12-3 to S_RQE_3_12-3 from the switch 12A.

[0389] When it is determined in step S204 that embodiment 3 is to be executed, the control means 13, the display device 15 and the audio device 16 execute steps S1, S2, S4, S8, S10, S13, S17 to S26 of the flowchart shown in Figure 12 (including the flowcharts shown in Figures 13 to 16) (step S205).

[0390] On the other hand, when it is determined in step S204 that the third embodiment will not be executed, the control means 13 determines whether to execute the first and second embodiments (step S206). In this case, the control means 13 determines to execute the first and second embodiments when it receives any one of signals "S_RQE_1_12-1 to S_RQE_3_12-1" and any one of signals "S_RQE_1_12-2 to S_RQE_3_12-2" from the switch 12A, and determines not to execute the first and second embodiments when it does not receive all of signals "S_RQE_1_12-1 to S_RQE_3_12-1" and all of signals "S_RQE_1_12-2 to S_RQE_3_12-2" from the switch 12A.

[0391] When it is determined in step S206 that embodiments 1 and 2 are to be executed, the control means 13, the display device 15 and the audio device 16 execute steps S1 to S12 of the flowchart shown in FIG. 4 (including the flowcharts shown in FIGS. 5 to 7 or the flowcharts shown in FIGS. 8 to 10) and steps S1, S2, S4, S8, S9A, S10, S11A, S12A and S13 to S15 of the flowchart shown in FIG. 11 (step S207).

[0392] On the other hand, when it is determined in step S06 that the first and second embodiments will not be executed, the control means 13 determines whether or not to execute the first and third embodiments (step S208). In this case, the control means 13 determines to execute the first and third embodiments when it receives any one of signals "S_RQE_1_12-1 to S_RQE_3_12-1" and any one of signals "S_RQE_1_12-3 to S_RQE_3_12-3" from the switch 12A, and determines not to execute the first and third embodiments when it does not receive all of signals "S_RQE_1_12-1 to S_RQE_3_12-1" and all of signals "S_RQE_1_12-3 to S_RQE_3_12-3" from the switch 12A.

[0393] When it is determined in step S208 that embodiments 1 and 3 are to be executed, the control means 13, the display device 15 and the audio device 16 execute steps S1 to S12 of the flowchart shown in Figure 4 (including the flowcharts shown in Figures 5 to 7 or the flowcharts shown in Figures 8 to 10) and steps S1, S2, S4, S8, S10, S13, S17 to S26 of the flowchart shown in Figure 12 (including the flowcharts shown in Figures 13 to 16) (step S209).

[0394] On the other hand, when it is determined in step S208 that the first and third embodiments will not be executed, the control means 13 determines whether or not to execute the second and third embodiments (step S210). In this case, the control means 13 determines to execute the second and third embodiments when it receives any one of signals "S_RQE_1_12-2 to S_RQE_3_12-2" and any one of signals "S_RQE_1_12-3 to S_RQE_3_12-3" from the switch 12A, and determines not to execute the second and third embodiments when it does not receive all of signals "S_RQE_1_12-2 to S_RQE_3_12-2" and all of signals "S_RQE_1_12-3 to S_RQE_3_12-3".

[0395] When it is determined in step S210 that embodiments 2 and 3 are to be executed, the control means 13, the display device 15 and the audio device 16 execute S1, S2, S4, S8, S9A, S10, S11A, S12A, S13, S14 and S15 of the flowchart shown in FIG. 11 and steps S1, S2, S4, S8, S10, S13, S17 to S26 of the flowchart shown in FIG. 12 (including the flowcharts shown in FIGS. 13 to 16) (step S211).

[0396] On the other hand, when it is determined in step S210 that the first and third embodiments are not to be executed, the control means 13 determines that the first to third embodiments are to be executed.

[0397] Then, the control means 13, the display device 15 and the audio device 16 execute steps S1 to S12 of the flowchart shown in Figure 4 (including the flowcharts shown in Figures 5 to 7 or the flowcharts shown in Figures 8 to 10), S1, S2, S4, S8, S9A, S10, S11A, S12A, S13, S14 and S15 of the flowchart shown in Figure 11, and steps S1, S2, S4, S8, S10, S13 and S17 to S26 of the flowchart shown in Figure 12 (including the flowcharts shown in Figures 13 to 16) (step S212).

[0398] Then, after step S201, or after step S203, or after step S205, or after step S207, or after step S209, or after step S211, or after step S212, the operation of the base station 1 proceeds to step S200.

[0399] As long as the base station 1 is in operation, the above-described steps S200 to S212 are repeatedly executed.

[0400] The base station 1 executes the flowchart shown in FIG. 18 to provide the installer with the reference information REF_info shown in the correspondence table TBL4.

[0401] Therefore, since the installer obtains a lot of information about wireless from the base station 1, the installer can easily determine the installation location of the base station 1 even if he or she has no knowledge of wireless.

[0402] The operation of the base station 1 implementing at least one of the first to third embodiments may be performed by software.

[0403] In this case, the base station 1 includes a CPU, a ROM, and a RAM.

[0404] The ROM stores a program Prog_E consisting of steps S200 to S212 shown in FIG. 18 (the flowchart shown in FIG. 4 (including the flowcharts shown in FIGS. 5 to 7 or the flowcharts shown in FIGS. 8 to 10), the flowchart shown in FIG. 11, and the flowchart shown in FIG. 12 (including the flowcharts shown in FIGS. 13 to 16)).

[0405] The CPU reads and executes the program Prog_E from the ROM, and provides the installer with the reference information REF_info shown in Table 4 or Table 5 in at least one of text and voice. In this case, the RAM temporarily stores the reference information REF_info, color, volume, correspondence table TBL4, etc.

[0406] [Embodiment 4] Fig. 19 is a schematic diagram of a base station according to embodiment 4. Referring to Fig. 19, base station 1A according to embodiment 4 is the same as base station 1, except that switch 12 of base station 1 shown in Fig. 2 is replaced with microphone 18, control means 13 of base station 1 is replaced with control means 13A, and display device 15 of base station 1 is replaced with display device 15A.

[0407] The base station 1A has a wireless communication range REG1 and communicates wirelessly with the terminal devices 3 to 5. The microphone 18 is disposed on the surface of the base station 1A. When the microphone 18 receives a voice command "Turn on the assist function" from the installer, it converts the voice command "Turn on the assist function" into an electrical signal and outputs the converted voice signal (electrical signal) S_ADO_ON of "Turn on the assist function" to the control means 13A.

[0408] In addition, when the microphone 18 receives a voice command "Turn off the assist function" from the installer, it converts the voice command "Turn off the assist function" into an electrical signal and outputs the converted voice signal (electrical signal) S_ADO_OFF of "Turn off the assist function" to the control means 13A.

[0409] When the control means 13A receives the audio signal (electrical signal) S_ADO_ON of "Turn on the assist function" from the microphone 18, it determines that the first mode for providing the installer with reference information REF_info has been accepted from the installer.

[0410] Furthermore, when the control means 13A receives an audio signal (electrical signal) S_ADO_OFF of "Turn off the assist function" from the microphone 18, it determines that the second mode in which the reference information REF_info is not provided to the installer has been accepted from the installer. Then, the base station 1A stops the operation of providing the reference information REF_info to the installer.

[0411] When the microphone 18 receives the voice "Can I watch the video?" from the installer, it outputs an audio signal (electrical signal) S_ADO_1 to the control means 13A.

[0412] Furthermore, when the microphone 18 receives a voice message from the installer asking "How many devices are connected?", it outputs an audio signal (electrical signal) S_ADO_2 to the control means 13A.

[0413] Furthermore, when the microphone 18 receives a voice message from the installer asking "Is it properly connected?", it outputs an audio signal (electrical signal) S_ADO_3 to the control means 13A.

[0414] Furthermore, when the microphone 18 receives a voice message from the installer saying "Can you see the video clearly?", it outputs an audio signal (electrical signal) S_ADO_4 to the control means 13A.

[0415] Furthermore, when the microphone 18 receives a voice message from the installer saying "Can you watch the video without any interruptions?", it outputs an audio signal (electrical signal) S_ADO_5 to the control means 13A.

[0416] Furthermore, when the microphone 18 receives a voice message from the installer saying "Is everything properly connected?", it outputs an audio signal (electrical signal) S_ADO_6 to the control means 13A.

[0417] Furthermore, when the microphone 18 receives a voice message from the installer saying, "Can you watch the video without any interruptions at all?", it outputs an audio signal (electrical signal) S_ADO_7 to the control means 13A.

[0418] Then, when the microphone 18 receives a voice message from the installer saying "Turn off the assist function," it outputs an audio signal (electrical signal) S_ADO_OFF to the control means 13A.

[0419] When the control means 13A receives an audio signal (electrical signal) S_ADO_ON from the microphone 18, it outputs the sentences "Please select from the following how to provide the reference information REF_info", "Provide the reference information REF_info in both text and audio", "Provide the reference information REF_info in text only", and "Provide the reference information REF_info in audio only" to the display device 15A, and controls the display device 15A to display the sentences "Please select from the following how to provide the reference information REF_info", "Provide the reference information REF_info in both text and audio", "Provide the reference information REF_info in text only", and "Provide the reference information REF_info in audio only".

[0420] Fig. 20 is a schematic diagram of a display screen of display device 15A shown in Fig. 19. Referring to Fig. 20, display device 15A has display screen 151. Display screen 151 is made up of a touch panel. Therefore, display device 15A is a display device having a touch panel arranged on its surface.

[0421] In accordance with control from the control means 13A, the display device 15A displays sentence 152, "Please select the method of providing reference information REF_info from the options below," sentence 153, "Provide reference information REF_info in both text and audio," sentence 154, "Provide reference information REF_info in text only," and sentence 155, "Provide reference information REF_info in audio only."

[0422] When the installer touches sentence 153 "Provide reference information REF_info both in text and audio", display device 15A outputs a signal S_STN&AU indicating that the installer has selected the sentence "Provide reference information REF_info both in text and audio" to control means 13A, when the installer touches sentence 154 "Provide reference information REF_info only in text", display device 15A outputs a signal S_STN indicating that the installer has selected the sentence "Provide reference information REF_info only in text" to control means 13A, and when the installer touches sentence 155 "Provide reference information REF_info only in audio", display device 15A outputs a signal S_AU indicating that the installer has selected the sentence "Provide reference information REF_info only in audio" to control means 13A. The rest of the description of display device 15A is the same as the description of display device 15 above.

[0423] When the control means 13A receives the signal S_STN&AU from the display device 15A, it outputs the text of “reference information REF_info” to the display device 15A and outputs the voice of “reference information REF_info” to the voice device 16.

[0424] Furthermore, when the control means 13A receives the signal S_STN from the display device 15A, it outputs the text of "reference information REF_info" to the display device 15A.

[0425] Furthermore, when the control means 13A receives the signal S_AU from the display device 15A, it outputs the voice of “reference information REF_info” to the audio device 16.

[0426] When the control means 13A determines that the first mode for providing reference information REF_info to the installer has been received from the installer, the base station 1A executes at least one of the above-mentioned first to third embodiments.

[0427] In this case, the control means 13A has the above-mentioned correspondence table TBL4 built in beforehand.

[0428] The correspondence table TBL4 includes the contents of the above-mentioned correspondence tables TBL1, TBL2, and TBL3.

[0429] When the control means 13A determines that the first mode has been received from the installer, the control means 13A, the display device 15A, the audio device 16, and the speaker 17 execute at least one of the following flowcharts: (1) steps S1 to S12 of the flowchart shown in FIG. 4 (including the flowcharts shown in FIGS. 5 to 7 or the flowcharts shown in FIGS. 8 to 10); (2) steps S1, S2, S4, S8, S9A, S10, S11A, S12A, S13, S14, and S15 of the flowchart shown in FIG. 11; and (3) steps S1, S2, S4, S8, S10, S13, and S17 to S26 of the flowchart shown in FIG. 12 (including the flowcharts shown in FIGS. 13 to 16).

[0430] Fig. 21 is a flowchart for explaining the operation of the base station 1A shown in Fig. 19. The flowchart shown in Fig. 21 is the same as the flowchart shown in Fig. 18, except that steps S200, S202, S204, S206, S208, and S210 in the flowchart shown in Fig. 18 are replaced with steps S200A, S202A, S204A, S206A, S208A, and S210A, respectively.

[0431] 21, when the operation of the base station 1A is started, the control means 13A of the base station 1A determines whether or not the audio signal S_AUO_1 has been received from the microphone 18 (step S200A).

[0432] If it is determined in step S200A that the audio signal S_AUO_1 has been received from the microphone 18, the above-described step S201 is executed.

[0433] On the other hand, when it is determined in step S200A that the audio signal S_AUO_1 has not been received from the microphone 18, the control means 13A determines whether or not the audio signal S_AUO_2 has been received from the microphone 18 (step S202A).

[0434] If it is determined in step S202A that the audio signal S_AUO_2 has been received from the microphone 18, the above-mentioned step S203 is executed.

[0435] On the other hand, when it is determined in step S202A that the audio signal S_AUO_2 has not been received from the microphone 18, the control means 13A determines whether or not the audio signal S_AUO_3 has been received from the microphone 18 (step S204A).

[0436] If it is determined in step S204A that the audio signal S_AUO_3 has been received from the microphone 18, the above-mentioned step S205 is executed.

[0437] On the other hand, when it is determined in step S204A that the audio signal S_AUO_3 has not been received from the microphone 18, the control means 13A determines whether or not the audio signal S_AUO_4 has been received from the microphone 18 (step S206A).

[0438] If it is determined in step S206A that the audio signal S_AUO_4 has been received from the microphone 18, then step S207 described above is executed.

[0439] On the other hand, when it is determined in step S206A that the audio signal S_AUO_4 has not been received from the microphone 18, the control means 13A determines whether or not the audio signal S_AUO_5 has been received from the microphone 18 (step S208A).

[0440] If it is determined in step S208A that the audio signal S_AUO_5 has been received from the microphone 18, the above-mentioned step S209 is executed.

[0441] On the other hand, when it is determined in step S208A that the audio signal S_AUO_5 has not been received from the microphone 18, the control means 13A determines whether or not the audio signal S_AUO_6 has been received from the microphone 18 (step S210A).

[0442] If it is determined in step S210A that the audio signal S_AUO_6 has been received from the microphone 18, the above-mentioned step S211 is executed.

[0443] On the other hand, if it is determined in step S210A that the audio signal S_AUO_6 has not been received from the microphone 18, the above-mentioned step S212 is executed.

[0444] Then, after step S201, or after step S203, or after step S205, or after step S207, or after step S209, or after step S211, or after step S212, the operation of the base station 1A proceeds to step S200A.

[0445] As long as the base station 1A is operating, the above-described steps S200A, S201, S202A, S203, S204A, S205, S206A, S207, S208A, S209, S210A, S211, and S212 are repeatedly executed.

[0446] When the base station 1A is performing the operation according to the flowchart shown in FIG. 21, if the control means 13A receives a voice (electrical signal) from the microphone 18 saying "Turn off the assist function," the base station 1A stops the operation.

[0447] In the flowchart shown in FIG. 21, the flowchart shown in FIG. 4 is executed in steps S201, S207, S209, and S212, the flowchart shown in FIG. 11 is executed in steps S203, S207, S211, and S212, and the flowchart shown in FIG. 12 is executed in steps S205, S209, S211, and S212.

[0448] When the control means 13A receives the signal S_STN&AU from the display device 15A, it determines in step S8 of the flowchart shown in Figure 4, the flowchart shown in Figure 11 and the flowchart shown in Figure 12 that the reference information REF_info will be provided in both text and audio; when the control means 13A receives the signal S_STN from the display device 15A, it determines in step S8 of the flowchart shown in Figure 4, the flowchart shown in Figure 11 and the flowchart shown in Figure 12 that the reference information REF_info will not be provided in both text and audio, and determines in step S10 that the reference information REF_info will be provided in text; when the control means 13A receives the signal S_AU from the display device 15A, it determines in step S8 of the flowchart shown in Figure 4, the flowchart shown in Figure 11 and the flowchart shown in Figure 12 that the reference information REF_info will not be provided in both text and audio, and determines in step S10 that the reference information REF_info will not be provided in text.

[0449] In the fourth embodiment, the operation of the base station 1A may be performed by software, in which case the base station 1A includes a CPU, a ROM, and a RAM.

[0450] The ROM stores a program Prog_F consisting of steps S200A, S201, S202A, S203, S204A, S205, S206A, S207, S208A, S209, S210A, S211, and S212 shown in FIG. 21 (the flowchart shown in FIG. 4 (including the flowcharts shown in FIGS. 5 to 7 or the flowcharts shown in FIGS. 8 to 10), the flowchart shown in FIG. 11, and the flowchart shown in FIG. 12 (including the flowcharts shown in FIGS. 13 to 16)).

[0451] The CPU reads and executes the program Prog_F from the ROM, and provides the installer with the reference information REF_info shown in the correspondence table TBL4 in at least one of text and voice. In this case, the RAM temporarily stores the reference information REF_info, color, volume, the correspondence table TBL4, etc.

[0452] In the embodiment of the present invention, the number of terminal devices N trm constitutes the "Reference Information REF_info".

[0453] In addition, in an embodiment of the present invention, base station 1 or base station 1A has a first wireless communication range (wireless communication range REG1), provides reference information REF_info to an installer who has no knowledge of wireless communication and serves as a reference when deciding where to install a base station that will perform wireless communication, and constitutes a "target base station" that is to be installed by the installer, and base station 2 constitutes an "other base station" different from the target base station (base station 1 or base station 1A).

[0454] Furthermore, in an embodiment of the present invention, switch 12, or switch 12A, or microphone 18 constitutes a "reception means" that accepts a first mode in which reference information REF_info is provided to the installer, or a second mode in which reference information REF_info is not provided to the installer.

[0455] Furthermore, in this embodiment of the present invention, the antenna 11, the control means 13 for controlling the wireless unit 14, and the wireless unit 14 constitute "acquisition means."

[0456] Furthermore, in an embodiment of the present invention, the control means 13, 13A that executes at least one of "outputting the reference information REF_info and the color of the text to the display device 15" and "outputting the reference information REF_info and the volume of the audio to the audio device 16", the display device 15, 15A that receives the reference information REF_info and the color of the text from the control means 13, 13A and displays the reference information REF_info in the color of the text received from the control means 13, 13A, and the audio device 16 that receives the reference information REF_info and the volume of the audio from the control means 13, 13A and outputs the reference information REF_info from the speaker 17 at the volume of the audio received from the control means 13, 13A constitute "providing means".

[0457] The embodiments disclosed herein should be considered to be illustrative in all respects and not restrictive. The scope of the present invention is defined by the claims, not by the description of the above embodiments, and is intended to include all modifications within the meaning and scope of the claims. [Industrial Applicability]

[0458] The present invention is applied to a base station and a program to be executed by a computer. [Explanation of symbols]

[0459] 1, 1A, 2 base station, 3 to 8 terminal device, 10 communication system, 11 antenna, 12, 12A switch, 13, 13A control means, 14 radio unit, 15, 15A display device, 16 audio device, 17 speaker, 18 microphone.

Claims

1. A target base station having a first wireless communication range, providing reference information to an installer who has no knowledge of wireless communication and serving as a reference when determining an installation location of a base station that performs wireless communication, and being a target to be installed by the installer, a receiving means for receiving from the installer a first mode in which the reference information is provided to the installer or a second mode in which the reference information is not provided to the installer; an acquisition means for acquiring the reference information when the acceptance means accepts the first mode; providing means for providing the installer with the reference information acquired by the acquisition means in at least one of voice and text when the acceptance means accepts the first mode; When the accepting means accepts the second mode, the acquiring means does not acquire the reference information, and the providing means does not provide the reference information to the installer.

2. the acquisition means performs carrier sensing within the first wireless communication range, and acquires a busy time consisting of a total length of time during which interference is received from wireless communication that uses the same wireless standard and the same frequency as the target base station and is not a communication target of the target base station, a length of time during which interference is received from wireless communication that uses the same frequency as the target base station and is of another wireless standard, and a length of time during which interference is received from a device that uses the same frequency as the target base station due to noise, The target base station according to claim 1, wherein the providing means provides the installer with the reference information consisting of "Radio waves are free" or "Radio waves are congested" in at least one of voice and text depending on the length of the busy time received from the acquisition means.

3. The providing means comprises: When the reference information is provided to the installer by voice, providing the reference information consisting of "the signal is clear" to the installer by the voice at a first volume, and providing the reference information consisting of "the signal is congested" to the installer by the voice at a second volume that is louder than the first volume; When the reference information is provided to the installer in the text, The target base station of claim 2, wherein the reference information consisting of "the signal is clear" is provided to the installer in the text of a first color, and the reference information consisting of "the signal is congested" is provided to the installer in the text of a second color different from the first color.

4. the acquisition means performs carrier sensing within the first wireless communication range, and acquires a busy time consisting of a total length of time during which interference is received from wireless communication that uses the same wireless standard and the same frequency as the target base station and is not a communication target of the target base station, a length of time during which interference is received from wireless communication that uses the same frequency as the target base station and is of another wireless standard, and a length of time during which interference is received from a device that uses the same frequency as the target base station due to noise, The target base station according to claim 1, wherein the providing means provides the installer with the reference information consisting of one of "Radio waves are free," "Radio waves are congested," and "Radio waves are very congested" in at least one of the voice and text formats, depending on the length of the busy time received from the acquisition means.

5. The providing means comprises: When the reference information is provided to the installer by voice, providing the reference information consisting of "the signal is clear" to the installer with the voice at a first volume, providing the reference information consisting of "the signal is congested" to the installer with the voice at a second volume that is greater than the first volume, and providing the reference information consisting of "the signal is very congested" to the installer with the voice at a third volume that is greater than the first volume and the second volume; When the reference information is provided to the installer in the text, The target base station of claim 4, wherein the reference information consisting of "the signal is clear" is provided to the installer with the text in a first color, the reference information consisting of "the signal is congested" is provided to the installer with the text in a second color different from the first color, and the reference information consisting of "the signal is very congested" is provided to the installer with the text in a third color different from the first color and the second color.

6. the acquisition means acquires the number of terminal devices that perform wireless communication with the target base station within the first wireless communication range; The target base station according to claim 1 , wherein the providing means provides the installer with the number of the terminal devices acquired by the acquiring means in at least one of voice and text.

7. the acquiring means acquires the number of the terminal devices at regular intervals; The target base station according to claim 6 , wherein said providing means provides said installer with the number of said terminal devices at regular intervals by at least one of said voice and text.

8. the acquisition means acquires the number of terminal devices that perform wireless communication with the target base station within the first wireless communication range, and acquires received power from the terminal devices that perform wireless communication with the target base station; The target base station according to claim 1, wherein the providing means provides the installer with the number of the terminal devices acquired by the acquisition means by at least one of the voice and text, and provides the installer with the strength of the radio waves by at least one of the voice and text depending on the received power acquired by the acquisition means.

9. The target base station according to claim 8, wherein the providing means provides the installer with at least one of "The signal is weak," "The signal is slightly weak," and "The signal is strong" in the form of voice and text.

10. The providing means comprises: When the reference information is provided to the installer by voice, providing the reference information consisting of "The signal is weak" to the installer with the voice at a first volume, providing the reference information consisting of "The signal is a little weak" to the installer with the voice at a second volume that is greater than the first volume, and providing the reference information consisting of "The signal is strong" to the installer with the voice at a third volume that is greater than the second volume; When the reference information is provided to the installer in the text, The target base station of claim 9, wherein the reference information consisting of "The signal is weak" is provided to the installer with the text in a first color, the reference information consisting of "The signal is a little weak" is provided to the installer with the text in a second color different from the first color, and the reference information consisting of "The signal is strong" is provided to the installer with the text in a third color different from the first color and the second color.

11. The target base station according to claim 1 , wherein the accepting unit accepts the first mode or the second mode by voice of the setting person.

12. A program for causing a computer to execute the provision of reference information to an installer that serves as a reference when determining an installation location of a base station that performs wireless communication, the base station being a target base station that is to be installed by an installer who has no knowledge of wireless, the target base station having a first wireless communication range, the program comprising: a first step in which a receiving means receives from the installer a first mode in which the reference information is provided to the installer, or a second mode in which the reference information is not provided to the installer; a second step of acquiring the reference information by an acquisition means when the acceptance means accepts the first mode in the first step; a third step in which a providing means provides the installer with the reference information acquired in the second step in at least one of voice and text when the accepting means accepts the first mode in the first step; When the accepting means accepts the second mode, the acquiring means does not acquire the reference information in the second step; The providing means, when the accepting means accepts the second mode, does not provide the reference information to the installer in the third step.

13. In the second step, the acquisition means performs carrier sensing in the first wireless communication range, and acquires a busy time consisting of a total length of time during which the target base station is subjected to interference from wireless communication that uses the same wireless standard and the same frequency as the target base station and is not a communication target of the target base station, a length of time during which the target base station is subjected to interference from wireless communication of another wireless standard that uses the same frequency as the target base station, and a length of time during which the target base station is subjected to interference due to noise from a device that uses the same frequency as the target base station; 13. A program for causing a computer to execute the program described in claim 12, wherein in the third step, the providing means provides the installer with the reference information consisting of "Radio waves are free" or "Radio waves are congested" in at least one of voice and text, depending on the length of the busy time received from the acquiring means.

14. The providing means comprises: When the reference information is provided to the installer by voice, In the third step, the reference information consisting of "the signal is clear" is provided to the installer by the voice at a first volume, and the reference information consisting of "the signal is congested" is provided to the installer by the voice at a second volume that is larger than the first volume; When the reference information is provided to the installer in the text, 14. A program to be executed by a computer as described in claim 13, wherein in the third step, the reference information consisting of "the signal is clear" is provided to the installer with the text in a first color, and the reference information consisting of "the signal is congested" is provided to the installer with the text in a second color different from the first color.

15. In the second step, the acquisition means performs carrier sensing in the first wireless communication range, and acquires a busy time consisting of a total length of time during which the target base station is subjected to interference from wireless communication that uses the same wireless standard and the same frequency as the target base station and is not a communication target of the target base station, a length of time during which the target base station is subjected to interference from wireless communication of another wireless standard that uses the same frequency as the target base station, and a length of time during which the target base station is subjected to interference due to noise from a device that uses the same frequency as the target base station; 13. A program for causing a computer to execute the program described in claim 12, wherein in the third step, the providing means provides the installer with the reference information consisting of one of "Radio waves are free," "Radio waves are congested," and "Radio waves are very congested" in at least one of the voice and text format, depending on the length of the busy time received from the acquiring means.

16. The providing means comprises: When the reference information is provided to the installer by voice, In the third step, the reference information consisting of "the signal is clear" is provided to the installer by the voice at a first volume, the reference information consisting of "the signal is congested" is provided to the installer by the voice at a second volume that is greater than the first volume, and the reference information consisting of "the signal is very congested" is provided to the installer by the voice at a third volume that is greater than the second volume; When the reference information is provided to the installer in the text, 16. The program for causing a computer to execute the program of claim 15, wherein in the third step, the reference information consisting of "the signal is clear" is provided to the installer with the text in a first color, the reference information consisting of "the signal is congested" is provided to the installer with the text in a second color different from the first color, and the reference information consisting of "the signal is very congested" is provided to the installer with the text in a third color different from the first color and the second color.

17. In the second step, the acquiring means acquires the number of terminal devices that perform wireless communication with the target base station within the first wireless communication range; 13. The program for causing a computer to execute the program according to claim 12, wherein the providing means, in the third step, provides the installer with the number of the terminal devices acquired by the acquiring means by at least one of the voice and the text.

18. In the second step, the acquiring means acquires the number of the terminal devices at regular time intervals; 18. The program for causing a computer to execute the program according to claim 17, wherein in the third step, the providing means provides the installer with the number of the terminal devices at regular intervals by at least one of the voice and the text.

19. the acquiring means acquires the number of terminal devices that perform wireless communication with the target base station within the first wireless communication range, and acquires received power from the terminal devices that perform wireless communication with the target base station, in the second step; 13. A program for causing a computer to execute the program described in claim 12, wherein the providing means provides the installer with the number of terminal devices acquired by the acquisition means in the third step by at least one of the voice and text, and provides the installer with the strength of radio waves by at least one of the voice and text depending on the received power acquired by the acquisition means.

20. 20. The program for causing a computer to execute the program described in claim 19, wherein the providing means, in the third step, provides the installer with at least one of "The signal is weak," "The signal is a little weak," and "The signal is strong" in the form of voice and text.

21. The providing means comprises: When the reference information is provided to the installer by voice, In the third step, the reference information consisting of "The signal is weak" is provided to the installer by the voice at a first volume, the reference information consisting of "The signal is a little weak" is provided to the installer by the voice at a second volume that is larger than the first volume, and the reference information consisting of "The signal is strong" is provided to the installer by the voice at a third volume that is larger than the second volume; When the reference information is provided to the installer in the text, 21. The program for causing a computer to execute the program of claim 20, wherein in the third step, the reference information consisting of "The signal is weak" is provided to the installer with the text in a first color, the reference information consisting of "The signal is a little weak" is provided to the installer with the text in a second color different from the first color, and the reference information consisting of "The signal is strong" is provided to the installer with the text in a third color different from the first color and the second color.

22. 13. The program for causing a computer to execute the program according to claim 12, wherein the accepting unit accepts the first mode or the second mode by voice of the user in the first step.

Images